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768862001 = 38925081
BaseRepresentation
bin101101110100111…
…110011100110001
31222120202020101102
4231310332130301
53033312041001
6204143214145
725024135115
oct5564763461
91876666342
10768862001
11365003446
121955a7355
13c339cc3b
1474181745
1547775e6b
hex2dd3e731

768862001 has 6 divisors (see below), whose sum is σ = 770995302. Its totient is φ = 766734560.

The previous prime is 768861991. The next prime is 768862027. The reversal of 768862001 is 100268867.

It can be divided in two parts, 76886 and 2001, that added together give a palindrome (78887).

It can be written as a sum of positive squares in 3 ways, for example, as 5997601 + 762864400 = 2449^2 + 27620^2 .

It is a de Polignac number, because none of the positive numbers 2k-768862001 is a prime.

It is a super-2 number, since 2×7688620012 = 1182297553163448002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768462001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148781 + ... + 153861.

It is an arithmetic number, because the mean of its divisors is an integer number (128499217).

Almost surely, 2768862001 is an apocalyptic number.

768862001 is the 12401-st centered decagonal number.

It is an amenable number.

768862001 is a deficient number, since it is larger than the sum of its proper divisors (2133301).

768862001 is an frugal number, since it uses more digits than its factorization.

768862001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 768862001 is about 27728.3609504781. The cubic root of 768862001 is about 916.1138856672.

The spelling of 768862001 in words is "seven hundred sixty-eight million, eight hundred sixty-two thousand, one".

Divisors: 1 389 5081 151321 1976509 768862001