80685995 has 16 divisors (see below), whose sum is σ = 110406240. Its totient is φ = 56077824.

The previous prime is 80685967. The next prime is 80686019. The reversal of 80685995 is 59958608.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80685995 - 2²⁶ = 13577131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35405 + ... + 37614.

It is an arithmetic number, because the mean of its divisors is an integer number (6900390).

Almost surely, 2^80685995 is an apocalyptic number.

80685995 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

80685995 is a deficient number, since it is larger than the sum of its proper divisors (29720245).

80685995 is a wasteful number, since it uses less digits than its factorization.

80685995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73054.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 80685995 is about 8982.5383383540. The cubic root of 80685995 is about 432.1150438775.

The spelling of 80685995 in words is "eighty million, six hundred eighty-five thousand, nine hundred ninety-five".