672733394 has 16 divisors (see below), whose sum is σ = 1062642240. Its totient is φ = 318787920.

The previous prime is 672733393. The next prime is 672733403. The reversal of 672733394 is 493337276.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (672733393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62072 + ... + 72099.

It is an arithmetic number, because the mean of its divisors is an integer number (66415140).

Almost surely, 2^672733394 is an apocalyptic number.

672733394 is a deficient number, since it is larger than the sum of its proper divisors (389908846).

672733394 is a wasteful number, since it uses less digits than its factorization.

672733394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134305.

The product of its digits is 571536, while the sum is 44.

The square root of 672733394 is about 25937.1045801184. The cubic root of 672733394 is about 876.2223542987. Note that the first 3 decimals are identical.

The spelling of 672733394 in words is "six hundred seventy-two million, seven hundred thirty-three thousand, three hundred ninety-four".