672449567 has 4 divisors (see below), whose sum is σ = 677358096. Its totient is φ = 667541040.

The previous prime is 672449563. The next prime is 672449573. The reversal of 672449567 is 765944276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672449567 - 2² = 672449563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672449563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2454059 + ... + 2454332.

It is an arithmetic number, because the mean of its divisors is an integer number (169339524).

Almost surely, 2^672449567 is an apocalyptic number.

672449567 is a deficient number, since it is larger than the sum of its proper divisors (4908529).

672449567 is a wasteful number, since it uses less digits than its factorization.

672449567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908528.

The product of its digits is 2540160, while the sum is 50.

The square root of 672449567 is about 25931.6325556260. The cubic root of 672449567 is about 876.0991105553.

The spelling of 672449567 in words is "six hundred seventy-two million, four hundred forty-nine thousand, five hundred sixty-seven".