11578664 has 8 divisors (see below), whose sum is σ = 21710010. Its totient is φ = 5789328.

The previous prime is 11578663. The next prime is 11578673. The reversal of 11578664 is 46687511.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 302500 = 3358^2 + 550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11578661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723659 + ... + 723674.

Almost surely, 2^11578664 is an apocalyptic number.

It is an amenable number.

11578664 is a deficient number, since it is larger than the sum of its proper divisors (10131346).

11578664 is a wasteful number, since it uses less digits than its factorization.

11578664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447339 (or 1447335 counting only the distinct ones).

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

The square root of 11578664 is about 3402.7435989213. The cubic root of 11578664 is about 226.2313656397.

The spelling of 11578664 in words is "eleven million, five hundred seventy-eight thousand, six hundred sixty-four".