672994433 has 2 divisors, whose sum is σ = 672994434. Its totient is φ = 672994432.

The previous prime is 672994331. The next prime is 672994447. The reversal of 672994433 is 334499276.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 631366129 + 41628304 = 25127^2 + 6452^2 .

It is a cyclic number.

It is not a de Polignac number, because 672994433 - 2⁸ = 672994177 is a prime.

It is not a weakly prime, because it can be changed into another prime (672990433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336497216 + 336497217.

It is an arithmetic number, because the mean of its divisors is an integer number (336497217).

Almost surely, 2^672994433 is an apocalyptic number.

It is an amenable number.

672994433 is a deficient number, since it is larger than the sum of its proper divisors (1).

672994433 is an equidigital number, since it uses as much as digits as its factorization.

672994433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 47.

The square root of 672994433 is about 25942.1362458838. The cubic root of 672994433 is about 876.3356724082.

The spelling of 672994433 in words is "six hundred seventy-two million, nine hundred ninety-four thousand, four hundred thirty-three".