87236622 has 128 divisors (see below), whose sum is σ = 229547520. Its totient is φ = 24261120.

The previous prime is 87236603. The next prime is 87236623. The reversal of 87236622 is 22663278.

87236622 is a `hidden beast` number, since 8 + 7 + 23 + 6 + 622 = 666.

It is a super-2 number, since 2×87236622² = 15220456435941768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87236623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535113 + ... + 535275.

It is an arithmetic number, because the mean of its divisors is an integer number (1793340).

Almost surely, 2^87236622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87236622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114773760).

87236622 is an abundant number, since it is smaller than the sum of its proper divisors (142310898).

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

87236622 is a wasteful number, since it uses less digits than its factorization.

87236622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 87236622 is about 9340.0547107605. The cubic root of 87236622 is about 443.5061162810.

The spelling of 87236622 in words is "eighty-seven million, two hundred thirty-six thousand, six hundred twenty-two".