66952760 has 64 divisors (see below), whose sum is σ = 172869120. Its totient is φ = 22861440.

The previous prime is 66952759. The next prime is 66952771. The reversal of 66952760 is 6725966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136115 + ... + 136605.

It is an arithmetic number, because the mean of its divisors is an integer number (2701080).

Almost surely, 2^66952760 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 66952760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86434560).

66952760 is an abundant number, since it is smaller than the sum of its proper divisors (105916360).

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

66952760 is a wasteful number, since it uses less digits than its factorization.

66952760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 66952760 is about 8182.4666207691. The cubic root of 66952760 is about 406.0593311174.

The spelling of 66952760 in words is "sixty-six million, nine hundred fifty-two thousand, seven hundred sixty".