87621436 has 24 divisors (see below), whose sum is σ = 175495040. Its totient is φ = 37498032.

The previous prime is 87621433. The next prime is 87621449. The reversal of 87621436 is 63412678.

It is a junction number, because it is equal to n+sod(n) for n = 87621395 and 87621404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87621433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22231 + ... + 25873.

Almost surely, 2^87621436 is an apocalyptic number.

It is an amenable number.

87621436 is an abundant number, since it is smaller than the sum of its proper divisors (87873604).

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

87621436 is a wasteful number, since it uses less digits than its factorization.

87621436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4511 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 87621436 is about 9360.6322436041. The cubic root of 87621436 is about 444.1572840488.

The spelling of 87621436 in words is "eighty-seven million, six hundred twenty-one thousand, four hundred thirty-six".