86639652 has 96 divisors (see below), whose sum is σ = 246879360. Its totient is φ = 26058240.

The previous prime is 86639647. The next prime is 86639669. The reversal of 86639652 is 25693668.

It is a happy number.

86639652 is a `hidden beast` number, since 8 + 6 + 639 + 6 + 5 + 2 = 666.

It is a super-2 number, since 2×86639652² = 15012858597362208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86639598 and 86639607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276648 + ... + 276960.

It is an arithmetic number, because the mean of its divisors is an integer number (2571660).

Almost surely, 2^86639652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86639652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123439680).

86639652 is an abundant number, since it is smaller than the sum of its proper divisors (160239708).

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

86639652 is a wasteful number, since it uses less digits than its factorization.

86639652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 562 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 86639652 is about 9308.0423290830. The cubic root of 86639652 is about 442.4921457957.

The spelling of 86639652 in words is "eighty-six million, six hundred thirty-nine thousand, six hundred fifty-two".