66570612 has 24 divisors (see below), whose sum is σ = 158637696. Its totient is φ = 21717888.

The previous prime is 66570611. The next prime is 66570613. The reversal of 66570612 is 21607566.

It is an interprime number because it is at equal distance from previous prime (66570611) and next prime (66570613).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58453 + ... + 59580.

It is an arithmetic number, because the mean of its divisors is an integer number (6609904).

Almost surely, 2^66570612 is an apocalyptic number.

It is an amenable number.

66570612 is an abundant number, since it is smaller than the sum of its proper divisors (92067084).

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

66570612 is a wasteful number, since it uses less digits than its factorization.

66570612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118087 (or 118085 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 66570612 is about 8159.0815659607. The cubic root of 66570612 is about 405.2852981391.

The spelling of 66570612 in words is "sixty-six million, five hundred seventy thousand, six hundred twelve".