66765344 has 24 divisors (see below), whose sum is σ = 133675920. Its totient is φ = 32815936.

The previous prime is 66765331. The next prime is 66765359. The reversal of 66765344 is 44356766.

It is a super-2 number, since 2×66765344² = 8915222318876672, which contains 22 as substring.

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, 15794 + ... + 19569.

It is an arithmetic number, because the mean of its divisors is an integer number (5569830).

Almost surely, 2^66765344 is an apocalyptic number.

It is an amenable number.

66765344 is an abundant number, since it is smaller than the sum of its proper divisors (66910576).

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

66765344 is a wasteful number, since it uses less digits than its factorization.

66765344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35432 (or 35424 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 66765344 is about 8171.0063027757. The cubic root of 66765344 is about 405.6800929044.

The spelling of 66765344 in words is "sixty-six million, seven hundred sixty-five thousand, three hundred forty-four".