673990542 has 24 divisors (see below), whose sum is σ = 1461521880. Its totient is φ = 224477520.

The previous prime is 673990523. The next prime is 673990579. The reversal of 673990542 is 245099376.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7792 + ... + 37532.

It is an arithmetic number, because the mean of its divisors is an integer number (60896745).

Almost surely, 2^673990542 is an apocalyptic number.

673990542 is an abundant number, since it is smaller than the sum of its proper divisors (787531338).

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

673990542 is a wasteful number, since it uses less digits than its factorization.

673990542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31008 (or 31005 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 673990542 is about 25961.3278165813. The cubic root of 673990542 is about 876.7678183936.

The spelling of 673990542 in words is "six hundred seventy-three million, nine hundred ninety thousand, five hundred forty-two".