66357852 has 72 divisors (see below), whose sum is σ = 177679488. Its totient is φ = 19224480.

The previous prime is 66357833. The next prime is 66357857. The reversal of 66357852 is 25875366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66357857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32403 + ... + 34389.

Almost surely, 2^66357852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66357852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88839744).

66357852 is an abundant number, since it is smaller than the sum of its proper divisors (111321636).

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

66357852 is a wasteful number, since it uses less digits than its factorization.

66357852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039 (or 2026 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 66357852 is about 8146.0328995162. The cubic root of 66357852 is about 404.8530727515.

The spelling of 66357852 in words is "sixty-six million, three hundred fifty-seven thousand, eight hundred fifty-two".