85390634 has 24 divisors (see below), whose sum is σ = 152176320. Its totient is φ = 35815416.

The previous prime is 85390621. The next prime is 85390691. The reversal of 85390634 is 43609358.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4664 + ... + 13875.

It is an arithmetic number, because the mean of its divisors is an integer number (6340680).

Almost surely, 2^85390634 is an apocalyptic number.

85390634 is a deficient number, since it is larger than the sum of its proper divisors (66785686).

85390634 is a wasteful number, since it uses less digits than its factorization.

85390634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18602 (or 18595 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 85390634 is about 9240.7052761139. The cubic root of 85390634 is about 440.3554875084.

The spelling of 85390634 in words is "eighty-five million, three hundred ninety thousand, six hundred thirty-four".