85517408 has 24 divisors (see below), whose sum is σ = 171542448. Its totient is φ = 41951104.

The previous prime is 85517363. The next prime is 85517417. The reversal of 85517408 is 80471558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23516 + ... + 26907.

It is an arithmetic number, because the mean of its divisors is an integer number (7147602).

Almost surely, 2^85517408 is an apocalyptic number.

It is an amenable number.

85517408 is an abundant number, since it is smaller than the sum of its proper divisors (86025040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85517408 is a wasteful number, since it uses less digits than its factorization.

85517408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50486 (or 50478 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 85517408 is about 9247.5622733778. The cubic root of 85517408 is about 440.5733022726.

The spelling of 85517408 in words is "eighty-five million, five hundred seventeen thousand, four hundred eight".