673361520 has 320 divisors, whose sum is σ = 2438177280. Its totient is φ = 152285184.

The previous prime is 673361519. The next prime is 673361537. The reversal of 673361520 is 25163376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2193207 + ... + 2193513.

It is an arithmetic number, because the mean of its divisors is an integer number (7619304).

Almost surely, 2^673361520 is an apocalyptic number.

673361520 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 673361520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219088640).

673361520 is an abundant number, since it is smaller than the sum of its proper divisors (1764815760).

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

673361520 is a wasteful number, since it uses less digits than its factorization.

673361520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 673361520 is about 25949.2103926112. The cubic root of 673361520 is about 876.4949768272.

The spelling of 673361520 in words is "six hundred seventy-three million, three hundred sixty-one thousand, five hundred twenty".