672259218 has 16 divisors (see below), whose sum is σ = 1348033536. Its totient is φ = 223500560.

The previous prime is 672259207. The next prime is 672259229. The reversal of 672259218 is 812952276.

It is an interprime number because it is at equal distance from previous prime (672259207) and next prime (672259229).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 672259218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143973 + ... + 148568.

It is an arithmetic number, because the mean of its divisors is an integer number (84252096).

Almost surely, 2^672259218 is an apocalyptic number.

672259218 is an abundant number, since it is smaller than the sum of its proper divisors (675774318).

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

672259218 is a wasteful number, since it uses less digits than its factorization.

672259218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292929.

The product of its digits is 120960, while the sum is 42.

The square root of 672259218 is about 25927.9620872910. The cubic root of 672259218 is about 876.0164375265.

The spelling of 672259218 in words is "six hundred seventy-two million, two hundred fifty-nine thousand, two hundred eighteen".