66311344 has 20 divisors (see below), whose sum is σ = 140158440. Its totient is φ = 30141440.

The previous prime is 66311327. The next prime is 66311351. The reversal of 66311344 is 44311366.

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, 188209 + ... + 188560.

It is an arithmetic number, because the mean of its divisors is an integer number (7007922).

Almost surely, 2^66311344 is an apocalyptic number.

It is an amenable number.

66311344 is an abundant number, since it is smaller than the sum of its proper divisors (73847096).

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

66311344 is a wasteful number, since it uses less digits than its factorization.

66311344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376788 (or 376782 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 66311344 is about 8143.1777580991. The cubic root of 66311344 is about 404.7584679851.

The spelling of 66311344 in words is "sixty-six million, three hundred eleven thousand, three hundred forty-four".