66672608 has 12 divisors (see below), whose sum is σ = 131261760. Its totient is φ = 33336288.

The previous prime is 66672559. The next prime is 66672677. The reversal of 66672608 is 80627666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041728 + ... + 1041791.

It is an arithmetic number, because the mean of its divisors is an integer number (10938480).

Almost surely, 2^66672608 is an apocalyptic number.

It is an amenable number.

66672608 is a deficient number, since it is larger than the sum of its proper divisors (64589152).

66672608 is a wasteful number, since it uses less digits than its factorization.

66672608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083529 (or 2083521 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 66672608 is about 8165.3296320479. The cubic root of 66672608 is about 405.4921781436.

The spelling of 66672608 in words is "sixty-six million, six hundred seventy-two thousand, six hundred eight".