85437387 has 24 divisors (see below), whose sum is σ = 147174144. Its totient is φ = 46697904.

The previous prime is 85437383. The next prime is 85437397. The reversal of 85437387 is 78373458.

It is not a de Polignac number, because 85437387 - 2² = 85437383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85437383) 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, 28033 + ... + 30930.

It is an arithmetic number, because the mean of its divisors is an integer number (6132256).

Almost surely, 2^85437387 is an apocalyptic number.

85437387 is a deficient number, since it is larger than the sum of its proper divisors (61736757).

85437387 is a wasteful number, since it uses less digits than its factorization.

85437387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58999 (or 58996 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 85437387 is about 9243.2346610913. The cubic root of 85437387 is about 440.4358405200.

The spelling of 85437387 in words is "eighty-five million, four hundred thirty-seven thousand, three hundred eighty-seven".