65911956 has 48 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 19901920.

The previous prime is 65911949. The next prime is 65911957.

65911956 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65911957) 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, 45085 + ... + 46523.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^65911956 is an apocalyptic number.

65911956 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65911956 is an abundant number, since it is smaller than the sum of its proper divisors (102464364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65911956 is a wasteful number, since it uses less digits than its factorization.

65911956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1802 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 65911956 is about 8118.6178626660. The cubic root of 65911956 is about 403.9442216232.

The spelling of 65911956 in words is "sixty-five million, nine hundred eleven thousand, nine hundred fifty-six".