80690526 has 32 divisors (see below), whose sum is σ = 204929280. Its totient is φ = 23054328.

The previous prime is 80690513. The next prime is 80690537. The reversal of 80690526 is 62509608.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106356 + ... + 107111.

It is an arithmetic number, because the mean of its divisors is an integer number (6404040).

Almost surely, 2^80690526 is an apocalyptic number.

80690526 is an abundant number, since it is smaller than the sum of its proper divisors (124238754).

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

80690526 is a wasteful number, since it uses less digits than its factorization.

80690526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213485 (or 213479 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80690526 is about 8982.7905463725. The cubic root of 80690526 is about 432.1231323387.

The spelling of 80690526 in words is "eighty million, six hundred ninety thousand, five hundred twenty-six".