66604744 has 16 divisors (see below), whose sum is σ = 126097920. Its totient is φ = 32978640.

The previous prime is 66604717. The next prime is 66604763. The reversal of 66604744 is 44740666.

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, 39592 + ... + 41239.

It is an arithmetic number, because the mean of its divisors is an integer number (7881120).

Almost surely, 2^66604744 is an apocalyptic number.

It is an amenable number.

66604744 is a deficient number, since it is larger than the sum of its proper divisors (59493176).

66604744 is a wasteful number, since it uses less digits than its factorization.

66604744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80940 (or 80936 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 66604744 is about 8161.1729549128. The cubic root of 66604744 is about 405.3545520931.

The spelling of 66604744 in words is "sixty-six million, six hundred four thousand, seven hundred forty-four".