86616556 has 36 divisors (see below), whose sum is σ = 168620592. Its totient is φ = 38885184.

The previous prime is 86616553. The next prime is 86616557. The reversal of 86616556 is 65561668.

It is a super-2 number, since 2×86616556² = 15004855546602272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86616553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23281 + ... + 26743.

Almost surely, 2^86616556 is an apocalyptic number.

It is an amenable number.

86616556 is a deficient number, since it is larger than the sum of its proper divisors (82004036).

86616556 is a wasteful number, since it uses less digits than its factorization.

86616556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 3515 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 86616556 is about 9306.8015988308. The cubic root of 86616556 is about 442.4528231275.

The spelling of 86616556 in words is "eighty-six million, six hundred sixteen thousand, five hundred fifty-six".