66464612 has 12 divisors (see below), whose sum is σ = 116370156. Its totient is φ = 33216000.

The previous prime is 66464609. The next prime is 66464623. The reversal of 66464612 is 21646466.

It can be written as a sum of positive squares in 2 ways, for example, as 1597696 + 64866916 = 1264^2 + 8054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13928 + ... + 18080.

It is an arithmetic number, because the mean of its divisors is an integer number (9697513).

Almost surely, 2^66464612 is an apocalyptic number.

It is an amenable number.

66464612 is a deficient number, since it is larger than the sum of its proper divisors (49905544).

66464612 is a wasteful number, since it uses less digits than its factorization.

66464612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158 (or 8156 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 66464612 is about 8152.5831489167. The cubic root of 66464612 is about 405.0700727202.

It can be divided in two parts, 66464 and 612, that added together give a palindrome (67076).

The spelling of 66464612 in words is "sixty-six million, four hundred sixty-four thousand, six hundred twelve".