66852752 has 20 divisors (see below), whose sum is σ = 130718940. Its totient is φ = 33118848.

The previous prime is 66852749. The next prime is 66852757. The reversal of 66852752 is 25725866.

It can be written as a sum of positive squares in 2 ways, for example, as 46022656 + 20830096 = 6784^2 + 4564^2 .

It is not an unprimeable number, because it can be changed into a prime (66852757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17423 + ... + 20910.

It is an arithmetic number, because the mean of its divisors is an integer number (6535947).

Almost surely, 2^66852752 is an apocalyptic number.

It is an amenable number.

66852752 is a deficient number, since it is larger than the sum of its proper divisors (63866188).

66852752 is a wasteful number, since it uses less digits than its factorization.

66852752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38450 (or 38444 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 66852752 is about 8176.3532213328. The cubic root of 66852752 is about 405.8570520885.

The spelling of 66852752 in words is "sixty-six million, eight hundred fifty-two thousand, seven hundred fifty-two".