66200072 has 16 divisors (see below), whose sum is σ = 129522240. Its totient is φ = 31660816.

The previous prime is 66200063. The next prime is 66200081. The reversal of 66200072 is 27000266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66200063) and next prime (66200081).

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 179708 + ... + 180075.

It is an arithmetic number, because the mean of its divisors is an integer number (8095140).

Almost surely, 2^66200072 is an apocalyptic number.

It is an amenable number.

66200072 is a deficient number, since it is larger than the sum of its proper divisors (63322168).

66200072 is a wasteful number, since it uses less digits than its factorization.

66200072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359812 (or 359808 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 66200072 is about 8136.3426673168. The cubic root of 66200072 is about 404.5319431463.

The spelling of 66200072 in words is "sixty-six million, two hundred thousand, seventy-two".