673907520 has 224 divisors, whose sum is σ = 2514234240. Its totient is φ = 150773760.

The previous prime is 673907519. The next prime is 673907569. The reversal of 673907520 is 25709376.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134826 + ... + 139734.

It is an arithmetic number, because the mean of its divisors is an integer number (11224260).

Almost surely, 2^673907520 is an apocalyptic number.

673907520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673907520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257117120).

673907520 is an abundant number, since it is smaller than the sum of its proper divisors (1840326720).

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

673907520 is a wasteful number, since it uses less digits than its factorization.

673907520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953 (or 4943 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 673907520 is about 25959.7288121429. The cubic root of 673907520 is about 876.7318168959.

The spelling of 673907520 in words is "six hundred seventy-three million, nine hundred seven thousand, five hundred twenty".