65912964 has 48 divisors (see below), whose sum is σ = 166324032. Its totient is φ = 20195712.

The previous prime is 65912933. The next prime is 65912983. The reversal of 65912964 is 46921956.

It is a happy 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, 43402 + ... + 44894.

It is an arithmetic number, because the mean of its divisors is an integer number (3465084).

Almost surely, 2^65912964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65912964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83162016).

65912964 is an abundant number, since it is smaller than the sum of its proper divisors (100411068).

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

65912964 is a wasteful number, since it uses less digits than its factorization.

65912964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1794 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 65912964 is about 8118.6799419610. The cubic root of 65912964 is about 403.9462808030.

The spelling of 65912964 in words is "sixty-five million, nine hundred twelve thousand, nine hundred sixty-four".