673457904 has 120 divisors (see below), whose sum is σ = 2159306240. Its totient is φ = 191942784.

The previous prime is 673457891. The next prime is 673457921. The reversal of 673457904 is 409754376.

673457904 is a `hidden beast` number, since 6 + 73 + 4 + 579 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 673457904.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 732357 + ... + 733275.

Almost surely, 2^673457904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673457904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079653120).

673457904 is an abundant number, since it is smaller than the sum of its proper divisors (1485848336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673457904 is a wasteful number, since it uses less digits than its factorization.

673457904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 673457904 is about 25951.0674924944. The cubic root of 673457904 is about 876.5367949090.

The spelling of 673457904 in words is "six hundred seventy-three million, four hundred fifty-seven thousand, nine hundred four".