66795072 has 28 divisors (see below), whose sum is σ = 176729136. Its totient is φ = 22264960.

The previous prime is 66795067. The next prime is 66795107. The reversal of 66795072 is 27059766.

It is a happy 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, 173754 + ... + 174137.

Almost surely, 2^66795072 is an apocalyptic number.

It is an amenable number.

66795072 is an abundant number, since it is smaller than the sum of its proper divisors (109934064).

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

66795072 is a wasteful number, since it uses less digits than its factorization.

66795072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347906 (or 347896 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 66795072 is about 8172.8252153096. The cubic root of 66795072 is about 405.7402951369.

The spelling of 66795072 in words is "sixty-six million, seven hundred ninety-five thousand, seventy-two".