86642602 has 4 divisors (see below), whose sum is σ = 129963906. Its totient is φ = 43321300.

The previous prime is 86642581. The next prime is 86642627. The reversal of 86642602 is 20624668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69906321 + 16736281 = 8361^2 + 4091^2 .

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 as a sum of consecutive naturals, namely, 21660649 + ... + 21660652.

Almost surely, 2^86642602 is an apocalyptic number.

86642602 is a deficient number, since it is larger than the sum of its proper divisors (43321304).

86642602 is a wasteful number, since it uses less digits than its factorization.

86642602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43321303.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 86642602 is about 9308.2007928493. The cubic root of 86642602 is about 442.4971678881.

The spelling of 86642602 in words is "eighty-six million, six hundred forty-two thousand, six hundred two".