80694643 has 16 divisors (see below), whose sum is σ = 85550080. Its totient is φ = 76010400.

The previous prime is 80694637. The next prime is 80694661. The reversal of 80694643 is 34649608.

It is a cyclic number.

It is not a de Polignac number, because 80694643 - 2⁵ = 80694611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80694596 and 80694605.

It is not an unprimeable number, because it can be changed into a prime (80694613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262696 + ... + 263002.

It is an arithmetic number, because the mean of its divisors is an integer number (5346880).

Almost surely, 2^80694643 is an apocalyptic number.

80694643 is a deficient number, since it is larger than the sum of its proper divisors (4855437).

80694643 is a wasteful number, since it uses less digits than its factorization.

80694643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 80694643 is about 8983.0197038635. The cubic root of 80694643 is about 432.1304814901.

The spelling of 80694643 in words is "eighty million, six hundred ninety-four thousand, six hundred forty-three".