66954672 has 30 divisors (see below), whose sum is σ = 187380492. Its totient is φ = 22318176.

The previous prime is 66954661. The next prime is 66954683. The reversal of 66954672 is 27645966.

It is an interprime number because it is at equal distance from previous prime (66954661) and next prime (66954683).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232338 + ... + 232625.

Almost surely, 2^66954672 is an apocalyptic number.

It is an amenable number.

66954672 is an abundant number, since it is smaller than the sum of its proper divisors (120425820).

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

66954672 is a wasteful number, since it uses less digits than its factorization.

66954672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464977 (or 464968 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 66954672 is about 8182.5834551198. The cubic root of 66954672 is about 406.0631964201.

The spelling of 66954672 in words is "sixty-six million, nine hundred fifty-four thousand, six hundred seventy-two".