66011952 has 40 divisors (see below), whose sum is σ = 180564336. Its totient is φ = 20709376.

The previous prime is 66011941. The next prime is 66012031. The reversal of 66011952 is 25911066.

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, 39633 + ... + 41264.

Almost surely, 2^66011952 is an apocalyptic number.

It is an amenable number.

66011952 is an abundant number, since it is smaller than the sum of its proper divisors (114552384).

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

66011952 is a wasteful number, since it uses less digits than its factorization.

66011952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80925 (or 80919 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 66011952 is about 8124.7739660867. The cubic root of 66011952 is about 404.1483949841.

The spelling of 66011952 in words is "sixty-six million, eleven thousand, nine hundred fifty-two".