66345752 has 24 divisors (see below), whose sum is σ = 136737300. Its totient is φ = 30156720.

The previous prime is 66345743. The next prime is 66345757. The reversal of 66345752 is 25754366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66345757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33302 + ... + 35237.

Almost surely, 2^66345752 is an apocalyptic number.

It is an amenable number.

66345752 is an abundant number, since it is smaller than the sum of its proper divisors (70391548).

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

66345752 is a wasteful number, since it uses less digits than its factorization.

66345752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68567 (or 68552 counting only the distinct ones).

The product of its digits is 151200, while the sum is 38.

The square root of 66345752 is about 8145.2901728545. The cubic root of 66345752 is about 404.8284636570.

The spelling of 66345752 in words is "sixty-six million, three hundred forty-five thousand, seven hundred fifty-two".