80706915 has 32 divisors (see below), whose sum is σ = 146826240. Its totient is φ = 42039648.

The previous prime is 80706887. The next prime is 80706917. The reversal of 80706915 is 51960708.

It is not a de Polignac number, because 80706915 - 2¹² = 80702819 is a prime.

It is a super-2 number, since 2×80706915² = 13027212257634450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80706915.

It is not an unprimeable number, because it can be changed into a prime (80706917) 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 31 ways as a sum of consecutive naturals, for example, 1147 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (4588320).

Almost surely, 2^80706915 is an apocalyptic number.

80706915 is a deficient number, since it is larger than the sum of its proper divisors (66119325).

80706915 is a wasteful number, since it uses less digits than its factorization.

80706915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13960 (or 13954 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 80706915 is about 8983.7027444145. The cubic root of 80706915 is about 432.1523864405.

The spelling of 80706915 in words is "eighty million, seven hundred six thousand, nine hundred fifteen".