85007915 has 4 divisors (see below), whose sum is σ = 102009504. Its totient is φ = 68006328.

The previous prime is 85007911. The next prime is 85007971. The reversal of 85007915 is 51970058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85007915 - 2² = 85007911 is a prime.

It is a super-2 number, since 2×85007915² = 14452691225294450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85007911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8500787 + ... + 8500796.

It is an arithmetic number, because the mean of its divisors is an integer number (25502376).

Almost surely, 2^85007915 is an apocalyptic number.

85007915 is a deficient number, since it is larger than the sum of its proper divisors (17001589).

85007915 is a wasteful number, since it uses less digits than its factorization.

85007915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17001588.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 85007915 is about 9219.9736984440. The cubic root of 85007915 is about 439.6966142067.

The spelling of 85007915 in words is "eighty-five million, seven thousand, nine hundred fifteen".