85307715 has 32 divisors (see below), whose sum is σ = 152712000. Its totient is φ = 45181440.

The previous prime is 85307699. The next prime is 85307723. The reversal of 85307715 is 51770358.

It is not a de Polignac number, because 85307715 - 2⁴ = 85307699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85307715.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17995 + ... + 22235.

It is an arithmetic number, because the mean of its divisors is an integer number (4772250).

Almost surely, 2^85307715 is an apocalyptic number.

85307715 is a deficient number, since it is larger than the sum of its proper divisors (67404285).

85307715 is a wasteful number, since it uses less digits than its factorization.

85307715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404 (or 4398 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 85307715 is about 9236.2175699796. The cubic root of 85307715 is about 440.2129048842.

The spelling of 85307715 in words is "eighty-five million, three hundred seven thousand, seven hundred fifteen".