673953856 has 14 divisors (see below), whose sum is σ = 1337377310. Its totient is φ = 336976896.

The previous prime is 673953829. The next prime is 673953901. The reversal of 673953856 is 658359376.

It can be written as a sum of positive squares in only one way, i.e., 457275456 + 216678400 = 21384^2 + 14720^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5265201 + ... + 5265328.

Almost surely, 2^673953856 is an apocalyptic number.

It is an amenable number.

673953856 is a deficient number, since it is larger than the sum of its proper divisors (663423454).

673953856 is a wasteful number, since it uses less digits than its factorization.

673953856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10530541 (or 10530531 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 52.

The square root of 673953856 is about 25960.6212560486. The cubic root of 673953856 is about 876.7519103129.

It can be divided in two parts, 673 and 953856, that added together give a square (954529 = 977²).

The spelling of 673953856 in words is "six hundred seventy-three million, nine hundred fifty-three thousand, eight hundred fifty-six".