87210650 has 12 divisors (see below), whose sum is σ = 162211902. Its totient is φ = 34884240.

The previous prime is 87210647. The next prime is 87210659. The reversal of 87210650 is 5601278.

It can be written as a sum of positive squares in 3 ways, for example, as 35988001 + 51222649 = 5999^2 + 7157^2 .

It is a hoax number, since the sum of its digits (29) 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 (87210659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872057 + ... + 872156.

Almost surely, 2^87210650 is an apocalyptic number.

87210650 is a deficient number, since it is larger than the sum of its proper divisors (75001252).

87210650 is a wasteful number, since it uses less digits than its factorization.

87210650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744225 (or 1744220 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 87210650 is about 9338.6642513799. The cubic root of 87210650 is about 443.4620985131.

The spelling of 87210650 in words is "eighty-seven million, two hundred ten thousand, six hundred fifty".