66200864 has 24 divisors (see below), whose sum is σ = 137193840. Its totient is φ = 31358016.

The previous prime is 66200861. The next prime is 66200867. The reversal of 66200864 is 46800266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66200861) and next prime (66200867).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 66200864.

It is not an unprimeable number, because it can be changed into a prime (66200861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53834 + ... + 55049.

It is an arithmetic number, because the mean of its divisors is an integer number (5716410).

Almost surely, 2^66200864 is an apocalyptic number.

It is an amenable number.

66200864 is an abundant number, since it is smaller than the sum of its proper divisors (70992976).

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

66200864 is a wasteful number, since it uses less digits than its factorization.

66200864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108912 (or 108904 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 66200864 is about 8136.3913376877. The cubic root of 66200864 is about 404.5335563773.

The spelling of 66200864 in words is "sixty-six million, two hundred thousand, eight hundred sixty-four".