86856553 has 16 divisors (see below), whose sum is σ = 105736320. Its totient is φ = 69647616.

The previous prime is 86856527. The next prime is 86856563. The reversal of 86856553 is 35565868.

It is a cyclic number.

It is not a de Polignac number, because 86856553 - 2⁵ = 86856521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86856563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18478 + ... + 22696.

It is an arithmetic number, because the mean of its divisors is an integer number (6608520).

Almost surely, 2^86856553 is an apocalyptic number.

It is an amenable number.

86856553 is a deficient number, since it is larger than the sum of its proper divisors (18879767).

86856553 is a wasteful number, since it uses less digits than its factorization.

86856553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416.

The product of its digits is 864000, while the sum is 46.

The square root of 86856553 is about 9319.6863144636. The cubic root of 86856553 is about 442.8610954456.

The spelling of 86856553 in words is "eighty-six million, eight hundred fifty-six thousand, five hundred fifty-three".