11723965 has 16 divisors (see below), whose sum is σ = 16251840. Its totient is φ = 8024320.

The previous prime is 11723953. The next prime is 11723977. The reversal of 11723965 is 56932711.

It is an interprime number because it is at equal distance from previous prime (11723953) and next prime (11723977).

It is a de Polignac number, because none of the positive numbers 2^k-11723965 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11723965.

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, 5335 + ... + 7204.

It is an arithmetic number, because the mean of its divisors is an integer number (1015740).

Almost surely, 2^11723965 is an apocalyptic number.

It is an amenable number.

11723965 is a deficient number, since it is larger than the sum of its proper divisors (4527875).

11723965 is a wasteful number, since it uses less digits than its factorization.

11723965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12572.

The product of its digits is 11340, while the sum is 34.

The square root of 11723965 is about 3424.0275991878. The cubic root of 11723965 is about 227.1737625611.

The spelling of 11723965 in words is "eleven million, seven hundred twenty-three thousand, nine hundred sixty-five".