85266615 has 24 divisors (see below), whose sum is σ = 158701680. Its totient is φ = 38978688.

The previous prime is 85266613. The next prime is 85266617. The reversal of 85266615 is 51666258.

It is an interprime number because it is at equal distance from previous prime (85266613) and next prime (85266617).

It is not a de Polignac number, because 85266615 - 2¹ = 85266613 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85266613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57270 + ... + 58739.

It is an arithmetic number, because the mean of its divisors is an integer number (6612570).

Almost surely, 2^85266615 is an apocalyptic number.

85266615 is a deficient number, since it is larger than the sum of its proper divisors (73435065).

85266615 is a wasteful number, since it uses less digits than its factorization.

85266615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116031 (or 116024 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 85266615 is about 9233.9923651690. The cubic root of 85266615 is about 440.1421974975.

The spelling of 85266615 in words is "eighty-five million, two hundred sixty-six thousand, six hundred fifteen".