11564690 has 16 divisors (see below), whose sum is σ = 20889792. Its totient is φ = 4609584.

The previous prime is 11564671. The next prime is 11564701. The reversal of 11564690 is 9646511.

It is a super-2 number, since 2×11564690² = 267484109592200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (1305612).

Almost surely, 2^11564690 is an apocalyptic number.

11564690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11564690 is a deficient number, since it is larger than the sum of its proper divisors (9325102).

11564690 is a wasteful number, since it uses less digits than its factorization.

11564690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 11564690 is about 3400.6896359415. The cubic root of 11564690 is about 226.1403180097.

The spelling of 11564690 in words is "eleven million, five hundred sixty-four thousand, six hundred ninety".