72200666 has 16 divisors (see below), whose sum is σ = 114903360. Its totient is φ = 33908160.

The previous prime is 72200663. The next prime is 72200669. The reversal of 72200666 is 66600227.

It is an interprime number because it is at equal distance from previous prime (72200663) and next prime (72200669).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72200663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17555 + ... + 21273.

It is an arithmetic number, because the mean of its divisors is an integer number (7181460).

Almost surely, 2^72200666 is an apocalyptic number.

72200666 is a deficient number, since it is larger than the sum of its proper divisors (42702694).

72200666 is a wasteful number, since it uses less digits than its factorization.

72200666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72200666 is about 8497.0975044423. The cubic root of 72200666 is about 416.4028895449.

The spelling of 72200666 in words is "seventy-two million, two hundred thousand, six hundred sixty-six".