11656497 has 4 divisors (see below), whose sum is σ = 15542000. Its totient is φ = 7770996.

The previous prime is 11656457. The next prime is 11656499. The reversal of 11656497 is 79465611.

11656497 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 11656497 - 2¹² = 11652401 is a prime.

It is a super-2 number, since 2×11656497² = 271747844622018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942747 + ... + 1942752.

It is an arithmetic number, because the mean of its divisors is an integer number (3885500).

Almost surely, 2^11656497 is an apocalyptic number.

It is an amenable number.

11656497 is a deficient number, since it is larger than the sum of its proper divisors (3885503).

11656497 is an equidigital number, since it uses as much as digits as its factorization.

11656497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885502.

The product of its digits is 45360, while the sum is 39.

The square root of 11656497 is about 3414.1612439954. The cubic root of 11656497 is about 226.7371510422.

The spelling of 11656497 in words is "eleven million, six hundred fifty-six thousand, four hundred ninety-seven".