83715915 has 8 divisors (see below), whose sum is σ = 133945488. Its totient is φ = 44648480.

The previous prime is 83715901. The next prime is 83715923. The reversal of 83715915 is 51951738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83715915 - 2⁴ = 83715899 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2790516 + ... + 2790545.

It is an arithmetic number, because the mean of its divisors is an integer number (16743186).

Almost surely, 2^83715915 is an apocalyptic number.

83715915 is a deficient number, since it is larger than the sum of its proper divisors (50229573).

83715915 is a wasteful number, since it uses less digits than its factorization.

83715915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581069.

The product of its digits is 37800, while the sum is 39.

The square root of 83715915 is about 9149.6401568586. The cubic root of 83715915 is about 437.4576437906.

The spelling of 83715915 in words is "eighty-three million, seven hundred fifteen thousand, nine hundred fifteen".