65723913 has 16 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 43759728.

The previous prime is 65723899. The next prime is 65723939. The reversal of 65723913 is 31932756.

It is not a de Polignac number, because 65723913 - 2⁵ = 65723881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65727913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39331 + ... + 40967.

It is an arithmetic number, because the mean of its divisors is an integer number (6093360).

Almost surely, 2^65723913 is an apocalyptic number.

It is an amenable number.

65723913 is a deficient number, since it is larger than the sum of its proper divisors (31769847).

65723913 is a wasteful number, since it uses less digits than its factorization.

65723913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133 (or 3127 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 65723913 is about 8107.0286171938. The cubic root of 65723913 is about 403.5597125598.

The spelling of 65723913 in words is "sixty-five million, seven hundred twenty-three thousand, nine hundred thirteen".