80694523 has 16 divisors (see below), whose sum is σ = 101348800. Its totient is φ = 63842688.

The previous prime is 80694517. The next prime is 80694527. The reversal of 80694523 is 32549608.

It is not a de Polignac number, because 80694523 - 2⁵ = 80694491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80694527) by changing a digit.

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, 4590 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (6334300).

Almost surely, 2^80694523 is an apocalyptic number.

80694523 is a deficient number, since it is larger than the sum of its proper divisors (20654277).

80694523 is a wasteful number, since it uses less digits than its factorization.

80694523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18131 (or 18117 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 80694523 is about 8983.0130245926. The cubic root of 80694523 is about 432.1302672847.

The spelling of 80694523 in words is "eighty million, six hundred ninety-four thousand, five hundred twenty-three".