66372570 has 48 divisors (see below), whose sum is σ = 188259552. Its totient is φ = 16090080.

The previous prime is 66372569. The next prime is 66372571. The reversal of 66372570 is 7527366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66372569) and next prime (66372571).

It is not an unprimeable number, because it can be changed into a prime (66372571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32532 + ... + 34511.

It is an arithmetic number, because the mean of its divisors is an integer number (3922074).

Almost surely, 2^66372570 is an apocalyptic number.

66372570 is an abundant number, since it is smaller than the sum of its proper divisors (121886982).

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

66372570 is a wasteful number, since it uses less digits than its factorization.

66372570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67067 (or 67064 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 66372570 is about 8146.9362339471. The cubic root of 66372570 is about 404.8830023271.

The spelling of 66372570 in words is "sixty-six million, three hundred seventy-two thousand, five hundred seventy".