11616965 has 16 divisors (see below), whose sum is σ = 14569200. Its totient is φ = 8881152.

The previous prime is 11616959. The next prime is 11616989. The reversal of 11616965 is 56961611.

It can be written as a sum of positive squares in 8 ways, for example, as 3602404 + 8014561 = 1898^2 + 2831^2 .

It is a cyclic number.

It is not a de Polignac number, because 11616965 - 2¹² = 11612869 is a prime.

It is a super-2 number, since 2×11616965² = 269907751622450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16031 + ... + 16739.

It is an arithmetic number, because the mean of its divisors is an integer number (910575).

Almost surely, 2^11616965 is an apocalyptic number.

It is an amenable number.

11616965 is a deficient number, since it is larger than the sum of its proper divisors (2952235).

11616965 is a wasteful number, since it uses less digits than its factorization.

11616965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 9720, while the sum is 35.

The square root of 11616965 is about 3408.3669110000. The cubic root of 11616965 is about 226.4805409296.

The spelling of 11616965 in words is "eleven million, six hundred sixteen thousand, nine hundred sixty-five".