79506515 has 16 divisors (see below), whose sum is σ = 108608256. Its totient is φ = 55308000.

The previous prime is 79506491. The next prime is 79506517. The reversal of 79506515 is 51560597.

It is not a de Polignac number, because 79506515 - 2¹⁶ = 79440979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79506517) 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, 30161 + ... + 32690.

It is an arithmetic number, because the mean of its divisors is an integer number (6788016).

Almost surely, 2^79506515 is an apocalyptic number.

79506515 is a deficient number, since it is larger than the sum of its proper divisors (29101741).

79506515 is a wasteful number, since it uses less digits than its factorization.

79506515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62890.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 79506515 is about 8916.6425856373. The cubic root of 79506515 is about 429.9991256517. Note that the first 3 decimals are identical.

The spelling of 79506515 in words is "seventy-nine million, five hundred six thousand, five hundred fifteen".