672893221 has 48 divisors (see below), whose sum is σ = 950245632. Its totient is φ = 462781440.

The previous prime is 672893203. The next prime is 672893231. The reversal of 672893221 is 122398276.

It is not a de Polignac number, because 672893221 - 2⁷ = 672893093 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672893231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251925 + ... + 254581.

It is an arithmetic number, because the mean of its divisors is an integer number (19796784).

Almost surely, 2^672893221 is an apocalyptic number.

It is an amenable number.

672893221 is a deficient number, since it is larger than the sum of its proper divisors (277352411).

672893221 is a wasteful number, since it uses less digits than its factorization.

672893221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2711 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 672893221 is about 25940.1854465229. The cubic root of 672893221 is about 876.2917393391.

The spelling of 672893221 in words is "six hundred seventy-two million, eight hundred ninety-three thousand, two hundred twenty-one".