80690568 has 128 divisors (see below), whose sum is σ = 257126400. Its totient is φ = 20542464.

The previous prime is 80690567. The next prime is 80690573. The reversal of 80690568 is 86509608.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80690563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53521 + ... + 55007.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800).

Almost surely, 2^80690568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80690568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128563200).

80690568 is an abundant number, since it is smaller than the sum of its proper divisors (176435832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80690568 is a wasteful number, since it uses less digits than its factorization.

80690568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 80690568 is about 8982.7928841758. The cubic root of 80690568 is about 432.1232073131.

The spelling of 80690568 in words is "eighty million, six hundred ninety thousand, five hundred sixty-eight".