673563924 has 252 divisors, whose sum is σ = 2051447328. Its totient is φ = 192883680.

The previous prime is 673563923. The next prime is 673563937. The reversal of 673563924 is 429365376.

673563924 is a `hidden beast` number, since 6 + 7 + 3 + 5 + 639 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 673563924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673563923) by changing a digit.

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 83 ways as a sum of consecutive naturals, for example, 8115187 + ... + 8115269.

It is an arithmetic number, because the mean of its divisors is an integer number (8140664).

Almost surely, 2^673563924 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 673563924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025723664).

673563924 is an abundant number, since it is smaller than the sum of its proper divisors (1377883404).

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

673563924 is a wasteful number, since it uses less digits than its factorization.

673563924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 122 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 673563924 is about 25953.1101026447. The cubic root of 673563924 is about 876.5827891498.

The spelling of 673563924 in words is "six hundred seventy-three million, five hundred sixty-three thousand, nine hundred twenty-four".