77870001 has 16 divisors (see below), whose sum is σ = 113899968. Its totient is φ = 46929600.

The previous prime is 77869991. The next prime is 77870027. The reversal of 77870001 is 10007877.

It is not a de Polignac number, because 77870001 - 2⁵ = 77869969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77870041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546 + ... + 12491.

It is an arithmetic number, because the mean of its divisors is an integer number (7118748).

Almost surely, 2^77870001 is an apocalyptic number.

It is an amenable number.

77870001 is a deficient number, since it is larger than the sum of its proper divisors (36029967).

77870001 is a wasteful number, since it uses less digits than its factorization.

77870001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232.

The product of its (nonzero) digits is 2744, while the sum is 30.

The square root of 77870001 is about 8824.3980531252. The cubic root of 77870001 is about 427.0283680766.

Adding to 77870001 its reverse (10007877), we get a palindrome (87877878).

It can be divided in two parts, 77 and 870001, that added together give a palindrome (870078).

The spelling of 77870001 in words is "seventy-seven million, eight hundred seventy thousand, one".