80690560 has 32 divisors (see below), whose sum is σ = 192902400. Its totient is φ = 32275968.

The previous prime is 80690537. The next prime is 80690563. The reversal of 80690560 is 6509608.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×80690560² = 13021932946227200, which contains 22 as substring.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62400 + ... + 63679.

It is an arithmetic number, because the mean of its divisors is an integer number (6028200).

Almost surely, 2^80690560 is an apocalyptic number.

80690560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80690560 is an abundant number, since it is smaller than the sum of its proper divisors (112211840).

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

80690560 is a wasteful number, since it uses less digits than its factorization.

80690560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126098 (or 126086 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 80690560 is about 8982.7924388800. The cubic root of 80690560 is about 432.1231930323.

The spelling of 80690560 in words is "eighty million, six hundred ninety thousand, five hundred sixty".