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68801 = 107643
BaseRepresentation
bin10000110011000001
310111101012
4100303001
54200201
61250305
7404405
oct206301
9114335
1068801
1147767
1233995
1325415
141b105
15155bb
hex10cc1

68801 has 4 divisors (see below), whose sum is σ = 69552. Its totient is φ = 68052.

The previous prime is 68791. The next prime is 68813. The reversal of 68801 is 10886.

68801 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10886 = 25443.

It is not a de Polignac number, because 68801 - 26 = 68737 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (68821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 428.

It is an arithmetic number, because the mean of its divisors is an integer number (17388).

268801 is an apocalyptic number.

It is an amenable number.

68801 is a deficient number, since it is larger than the sum of its proper divisors (751).

68801 is a wasteful number, since it uses less digits than its factorization.

68801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 68801 is about 262.2994471973. The cubic root of 68801 is about 40.9761908165.

The spelling of 68801 in words is "sixty-eight thousand, eight hundred one".

Divisors: 1 107 643 68801