673589520 has 200 divisors, whose sum is σ = 2463056640. Its totient is φ = 170138880.

The previous prime is 673589479. The next prime is 673589549. The reversal of 673589520 is 25985376.

It is a happy number.

673589520 is a `hidden beast` number, since 6 + 73 + 58 + 9 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 120385 + ... + 125855.

Almost surely, 2^673589520 is an apocalyptic number.

673589520 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 673589520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231528320).

673589520 is an abundant number, since it is smaller than the sum of its proper divisors (1789467120).

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

673589520 is a wasteful number, since it uses less digits than its factorization.

673589520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515 (or 5500 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 673589520 is about 25953.6032180505. The cubic root of 673589520 is about 876.5938926388.

673589520 divided by its sum of digits (45) gives a triangular number (14968656 = T₅₄₇₁).

The spelling of 673589520 in words is "six hundred seventy-three million, five hundred eighty-nine thousand, five hundred twenty".