11864657 has 16 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 9500928.

The previous prime is 11864653. The next prime is 11864659. The reversal of 11864657 is 75646811.

It is a cyclic number.

It is not a de Polignac number, because 11864657 - 2² = 11864653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11864657.

It is not an unprimeable number, because it can be changed into a prime (11864653) 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, 21023 + ... + 21579.

It is an arithmetic number, because the mean of its divisors is an integer number (903960).

Almost surely, 2^11864657 is an apocalyptic number.

11864657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11864657 is a deficient number, since it is larger than the sum of its proper divisors (2598703).

11864657 is a wasteful number, since it uses less digits than its factorization.

11864657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its digits is 40320, while the sum is 38.

The square root of 11864657 is about 3444.5111409313. The cubic root of 11864657 is about 228.0788751933.

It can be divided in two parts, 11864 and 657, that added together give a palindrome (12521).

The spelling of 11864657 in words is "eleven million, eight hundred sixty-four thousand, six hundred fifty-seven".