66770672 has 40 divisors (see below), whose sum is σ = 133786080. Its totient is φ = 32264960.

The previous prime is 66770657. The next prime is 66770689. The reversal of 66770672 is 27607766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59654 + ... + 60762.

It is an arithmetic number, because the mean of its divisors is an integer number (3344652).

Almost surely, 2^66770672 is an apocalyptic number.

It is an amenable number.

66770672 is an abundant number, since it is smaller than the sum of its proper divisors (67015408).

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

66770672 is a wasteful number, since it uses less digits than its factorization.

66770672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 66770672 is about 8171.3323271055. The cubic root of 66770672 is about 405.6908839621.

The spelling of 66770672 in words is "sixty-six million, seven hundred seventy thousand, six hundred seventy-two".