87698610 has 48 divisors (see below), whose sum is σ = 235886040. Its totient is φ = 22579200.

The previous prime is 87698557. The next prime is 87698617. The reversal of 87698610 is 1689678.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42419169 + 45279441 = 6513^2 + 6729^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (87698617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14191 + ... + 19410.

Almost surely, 2^87698610 is an apocalyptic number.

87698610 is an abundant number, since it is smaller than the sum of its proper divisors (148187430).

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

87698610 is a wasteful number, since it uses less digits than its factorization.

87698610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33643 (or 33640 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 87698610 is about 9364.7536006026. The cubic root of 87698610 is about 444.2876453594.

The spelling of 87698610 in words is "eighty-seven million, six hundred ninety-eight thousand, six hundred ten".