673664452 has 6 divisors (see below), whose sum is σ = 1178912798. Its totient is φ = 336832224.

The previous prime is 673664447. The next prime is 673664477. The reversal of 673664452 is 254466376.

It can be written as a sum of positive squares in only one way, i.e., 590781636 + 82882816 = 24306^2 + 9104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 673664399 and 673664408.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 84208053 + ... + 84208060.

Almost surely, 2^673664452 is an apocalyptic number.

It is an amenable number.

673664452 is a deficient number, since it is larger than the sum of its proper divisors (505248346).

673664452 is a wasteful number, since it uses less digits than its factorization.

673664452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168416117 (or 168416115 counting only the distinct ones).

The product of its digits is 725760, while the sum is 43.

The square root of 673664452 is about 25955.0467539552. The cubic root of 673664452 is about 876.6263963600.

The spelling of 673664452 in words is "six hundred seventy-three million, six hundred sixty-four thousand, four hundred fifty-two".