66444316 has 12 divisors (see below), whose sum is σ = 116887680. Its totient is φ = 33047840.

The previous prime is 66444299. The next prime is 66444359. The reversal of 66444316 is 61344466.

It is a congruent number.

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, 42721 + ... + 44248.

It is an arithmetic number, because the mean of its divisors is an integer number (9740640).

Almost surely, 2^66444316 is an apocalyptic number.

It is an amenable number.

66444316 is a deficient number, since it is larger than the sum of its proper divisors (50443364).

66444316 is a wasteful number, since it uses less digits than its factorization.

66444316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87164 (or 87162 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 66444316 is about 8151.3382950286. The cubic root of 66444316 is about 405.0288370464.

The spelling of 66444316 in words is "sixty-six million, four hundred forty-four thousand, three hundred sixteen".