86911642 has 4 divisors (see below), whose sum is σ = 130367466. Its totient is φ = 43455820.

The previous prime is 86911639. The next prime is 86911673. The reversal of 86911642 is 24611968.

It is a happy number.

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., 86099841 + 811801 = 9279^2 + 901^2 .

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, 21727909 + ... + 21727912.

Almost surely, 2^86911642 is an apocalyptic number.

86911642 is a deficient number, since it is larger than the sum of its proper divisors (43455824).

86911642 is a wasteful number, since it uses less digits than its factorization.

86911642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43455823.

The product of its digits is 20736, while the sum is 37.

The square root of 86911642 is about 9322.6413639054. The cubic root of 86911642 is about 442.9547042675.

The spelling of 86911642 in words is "eighty-six million, nine hundred eleven thousand, six hundred forty-two".