66945852 has 30 divisors (see below), whose sum is σ = 175010528. Its totient is φ = 22315176.

The previous prime is 66945841. The next prime is 66945859. The reversal of 66945852 is 25854966.

66945852 is a `hidden beast` number, since 6 + 69 + 4 + 585 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66945798 and 66945807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66945859) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 102988 + ... + 103635.

Almost surely, 2^66945852 is an apocalyptic number.

It is an amenable number.

66945852 is an abundant number, since it is smaller than the sum of its proper divisors (108064676).

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

66945852 is a wasteful number, since it uses less digits than its factorization.

66945852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206639 (or 206628 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 66945852 is about 8182.0444877793. The cubic root of 66945852 is about 406.0453652787.

The spelling of 66945852 in words is "sixty-six million, nine hundred forty-five thousand, eight hundred fifty-two".