12617644 has 12 divisors (see below), whose sum is σ = 23779504. Its totient is φ = 5823504.

The previous prime is 12617609. The next prime is 12617659. The reversal of 12617644 is 44671621.

It is a super-2 number, since 2×12617644² = 318409880221472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121272 + ... + 121375.

Almost surely, 2^12617644 is an apocalyptic number.

It is an amenable number.

12617644 is a deficient number, since it is larger than the sum of its proper divisors (11161860).

12617644 is a wasteful number, since it uses less digits than its factorization.

12617644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242664 (or 242662 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 12617644 is about 3552.1323173553. The cubic root of 12617644 is about 232.8052428920.

The spelling of 12617644 in words is "twelve million, six hundred seventeen thousand, six hundred forty-four".