80634015 has 64 divisors (see below), whose sum is σ = 178744320. Its totient is φ = 33505920.

The previous prime is 80633983. The next prime is 80634017. The reversal of 80634015 is 51043608.

It is not a de Polignac number, because 80634015 - 2⁵ = 80633983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 80634015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80634017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6517 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (2792880).

Almost surely, 2^80634015 is an apocalyptic number.

80634015 is an abundant number, since it is smaller than the sum of its proper divisors (98110305).

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

80634015 is a wasteful number, since it uses less digits than its factorization.

80634015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789 (or 7783 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 80634015 is about 8979.6444807130. The cubic root of 80634015 is about 432.0222307233.

The spelling of 80634015 in words is "eighty million, six hundred thirty-four thousand, fifteen".