673648458 has 64 divisors (see below), whose sum is σ = 1626531840. Its totient is φ = 181697472.

The previous prime is 673648457. The next prime is 673648471. The reversal of 673648458 is 854846376.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 673648458.

It is not an unprimeable number, because it can be changed into a prime (673648457) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 251635 + ... + 254297.

It is an arithmetic number, because the mean of its divisors is an integer number (25414560).

Almost surely, 2^673648458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673648458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813265920).

673648458 is an abundant number, since it is smaller than the sum of its proper divisors (952883382).

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

673648458 is a wasteful number, since it uses less digits than its factorization.

673648458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011.

The product of its digits is 3870720, while the sum is 51.

The square root of 673648458 is about 25954.7386424907. The cubic root of 673648458 is about 876.6194587452.

The spelling of 673648458 in words is "six hundred seventy-three million, six hundred forty-eight thousand, four hundred fifty-eight".