11861644 has 6 divisors (see below), whose sum is σ = 20757884. Its totient is φ = 5930820.

The previous prime is 11861639. The next prime is 11861659. The reversal of 11861644 is 44616811.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1482702 + ... + 1482709.

Almost surely, 2^11861644 is an apocalyptic number.

It is an amenable number.

11861644 is a deficient number, since it is larger than the sum of its proper divisors (8896240).

11861644 is a wasteful number, since it uses less digits than its factorization.

11861644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965415 (or 2965413 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 11861644 is about 3444.0737506621. The cubic root of 11861644 is about 228.0595668719.

The spelling of 11861644 in words is "eleven million, eight hundred sixty-one thousand, six hundred forty-four".