85266840 has 32 divisors (see below), whose sum is σ = 255800880. Its totient is φ = 22737792.

The previous prime is 85266823. The next prime is 85266869. The reversal of 85266840 is 4866258.

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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355159 + ... + 355398.

Almost surely, 2^85266840 is an apocalyptic number.

It is an amenable number.

85266840 is an abundant number, since it is smaller than the sum of its proper divisors (170534040).

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

85266840 is a wasteful number, since it uses less digits than its factorization.

85266840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710571 (or 710567 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 85266840 is about 9234.0045484069. The cubic root of 85266840 is about 440.1425846436.

The spelling of 85266840 in words is "eighty-five million, two hundred sixty-six thousand, eight hundred forty".