11715649 has 4 divisors (see below), whose sum is σ = 12780720. Its totient is φ = 10650580.

The previous prime is 11715631. The next prime is 11715661. The reversal of 11715649 is 94651711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11715649 - 2⁵ = 11715617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11715149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532519 + ... + 532540.

It is an arithmetic number, because the mean of its divisors is an integer number (3195180).

Almost surely, 2^11715649 is an apocalyptic number.

It is an amenable number.

11715649 is a deficient number, since it is larger than the sum of its proper divisors (1065071).

11715649 is a wasteful number, since it uses less digits than its factorization.

11715649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065070.

The product of its digits is 7560, while the sum is 34.

The square root of 11715649 is about 3422.8130243997. The cubic root of 11715649 is about 227.1200371687.

The spelling of 11715649 in words is "eleven million, seven hundred fifteen thousand, six hundred forty-nine".