66957088 has 48 divisors (see below), whose sum is σ = 144619776. Its totient is φ = 30263040.

The previous prime is 66957061. The next prime is 66957097. The reversal of 66957088 is 88075966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78070 + ... + 78922.

It is an arithmetic number, because the mean of its divisors is an integer number (3012912).

Almost surely, 2^66957088 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 66957088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72309888).

66957088 is an abundant number, since it is smaller than the sum of its proper divisors (77662688).

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

66957088 is a wasteful number, since it uses less digits than its factorization.

66957088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 66957088 is about 8182.7310844241. The cubic root of 66957088 is about 406.0680805049.

The spelling of 66957088 in words is "sixty-six million, nine hundred fifty-seven thousand, eighty-eight".