87968690 has 8 divisors (see below), whose sum is σ = 158343660. Its totient is φ = 35187472.

The previous prime is 87968663. The next prime is 87968707. The reversal of 87968690 is 9686978.

It can be written as a sum of positive squares in 2 ways, for example, as 78127921 + 9840769 = 8839^2 + 3137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×87968690² = 15476980840632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4398425 + ... + 4398444.

Almost surely, 2^87968690 is an apocalyptic number.

87968690 is a deficient number, since it is larger than the sum of its proper divisors (70374970).

87968690 is a wasteful number, since it uses less digits than its factorization.

87968690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796876.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 87968690 is about 9379.1625425728. The cubic root of 87968690 is about 444.7432597225.

The spelling of 87968690 in words is "eighty-seven million, nine hundred sixty-eight thousand, six hundred ninety".