86544774 has 40 divisors (see below), whose sum is σ = 195009408. Its totient is φ = 28686960.

The previous prime is 86544763. The next prime is 86544781. The reversal of 86544774 is 47744568.

It is a super-2 number, since 2×86544774² = 14979995813422152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29544 + ... + 32340.

Almost surely, 2^86544774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86544774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97504704).

86544774 is an abundant number, since it is smaller than the sum of its proper divisors (108464634).

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

86544774 is a wasteful number, since it uses less digits than its factorization.

86544774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002 (or 2993 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 86544774 is about 9302.9443726167. The cubic root of 86544774 is about 442.3305642599.

The spelling of 86544774 in words is "eighty-six million, five hundred forty-four thousand, seven hundred seventy-four".