87387620 has 12 divisors (see below), whose sum is σ = 183514044. Its totient is φ = 34955040.

The previous prime is 87387571. The next prime is 87387623. The reversal of 87387620 is 2678378.

It can be written as a sum of positive squares in 2 ways, for example, as 28987456 + 58400164 = 5384^2 + 7642^2 .

It is a super-2 number, since 2×87387620² = 15273192258528800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (87387623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2184671 + ... + 2184710.

It is an arithmetic number, because the mean of its divisors is an integer number (15292837).

Almost surely, 2^87387620 is an apocalyptic number.

It is an amenable number.

87387620 is an abundant number, since it is smaller than the sum of its proper divisors (96126424).

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

87387620 is a wasteful number, since it uses less digits than its factorization.

87387620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369390 (or 4369388 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 87387620 is about 9348.1345732718. The cubic root of 87387620 is about 443.7618572511.

The spelling of 87387620 in words is "eighty-seven million, three hundred eighty-seven thousand, six hundred twenty".