87698730 has 48 divisors (see below), whose sum is σ = 244844640. Its totient is φ = 20045088.

The previous prime is 87698719. The next prime is 87698749. The reversal of 87698730 is 3789678.

It is a super-2 number, since 2×87698730² = 15382134487225800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87698730.

It is an unprimeable number.

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, 28360 + ... + 31299.

It is an arithmetic number, because the mean of its divisors is an integer number (5100930).

Almost surely, 2^87698730 is an apocalyptic number.

87698730 is an abundant number, since it is smaller than the sum of its proper divisors (157145910).

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

87698730 is a wasteful number, since it uses less digits than its factorization.

87698730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59683 (or 59676 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 87698730 is about 9364.7600076030. The cubic root of 87698730 is about 444.2878480023.

The spelling of 87698730 in words is "eighty-seven million, six hundred ninety-eight thousand, seven hundred thirty".