86977690 has 8 divisors (see below), whose sum is σ = 156559860. Its totient is φ = 34791072.

The previous prime is 86977679. The next prime is 86977703. The reversal of 86977690 is 9677968.

It can be written as a sum of positive squares in 2 ways, for example, as 85877289 + 1100401 = 9267^2 + 1049^2 .

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

It is a super-2 number, since 2×86977690² = 15130237115472200, 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, 4348875 + ... + 4348894.

Almost surely, 2^86977690 is an apocalyptic number.

86977690 is a deficient number, since it is larger than the sum of its proper divisors (69582170).

86977690 is a wasteful number, since it uses less digits than its factorization.

86977690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697776.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 86977690 is about 9326.1830348755. The cubic root of 86977690 is about 443.0668828116.

The spelling of 86977690 in words is "eighty-six million, nine hundred seventy-seven thousand, six hundred ninety".