66666152 has 16 divisors (see below), whose sum is σ = 142856160. Its totient is φ = 28571184.

The previous prime is 66666133. The next prime is 66666191. The reversal of 66666152 is 25166666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595178 + ... + 595289.

It is an arithmetic number, because the mean of its divisors is an integer number (8928510).

Almost surely, 2^66666152 is an apocalyptic number.

It is an amenable number.

66666152 is an abundant number, since it is smaller than the sum of its proper divisors (76190008).

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

66666152 is a wasteful number, since it uses less digits than its factorization.

66666152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190480 (or 1190476 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 66666152 is about 8164.9342924484. The cubic root of 66666152 is about 405.4790896000.

The spelling of 66666152 in words is "sixty-six million, six hundred sixty-six thousand, one hundred fifty-two".