80634515 has 16 divisors (see below), whose sum is σ = 104400576. Its totient is φ = 59433600.

The previous prime is 80634493. The next prime is 80634517. The reversal of 80634515 is 51543608.

It is a happy number.

It is not a de Polignac number, because 80634515 - 2¹⁰ = 80633491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80634517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52610 + ... + 54120.

It is an arithmetic number, because the mean of its divisors is an integer number (6525036).

Almost surely, 2^80634515 is an apocalyptic number.

80634515 is a deficient number, since it is larger than the sum of its proper divisors (23766061).

80634515 is a wasteful number, since it uses less digits than its factorization.

80634515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 80634515 is about 8979.6723214157. The cubic root of 80634515 is about 432.0231236908.

The spelling of 80634515 in words is "eighty million, six hundred thirty-four thousand, five hundred fifteen".