66496912 has 20 divisors (see below), whose sum is σ = 129707100. Its totient is φ = 33024128.

The previous prime is 66496901. The next prime is 66496919. The reversal of 66496912 is 21969466.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43877376 + 22619536 = 6624^2 + 4756^2 .

It is not an unprimeable number, because it can be changed into a prime (66496919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11563 + ... + 16330.

It is an arithmetic number, because the mean of its divisors is an integer number (6485355).

Almost surely, 2^66496912 is an apocalyptic number.

It is an amenable number.

66496912 is a deficient number, since it is larger than the sum of its proper divisors (63210188).

66496912 is a wasteful number, since it uses less digits than its factorization.

66496912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28050 (or 28044 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 66496912 is about 8154.5638755239. The cubic root of 66496912 is about 405.1356797857.

The spelling of 66496912 in words is "sixty-six million, four hundred ninety-six thousand, nine hundred twelve".