672442251 has 8 divisors (see below), whose sum is σ = 965558160. Its totient is φ = 413810592.

The previous prime is 672442247. The next prime is 672442279. The reversal of 672442251 is 152244276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672442251 - 2² = 672442247 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (672442231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8621016 + ... + 8621093.

It is an arithmetic number, because the mean of its divisors is an integer number (120694770).

Almost surely, 2^672442251 is an apocalyptic number.

672442251 is a deficient number, since it is larger than the sum of its proper divisors (293115909).

672442251 is a wasteful number, since it uses less digits than its factorization.

672442251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242125.

The product of its digits is 26880, while the sum is 33.

The square root of 672442251 is about 25931.4914920064. The cubic root of 672442251 is about 876.0959333335.

The spelling of 672442251 in words is "six hundred seventy-two million, four hundred forty-two thousand, two hundred fifty-one".