673251668 has 12 divisors (see below), whose sum is σ = 1178374932. Its totient is φ = 336573120.

The previous prime is 673251659. The next prime is 673251673. The reversal of 673251668 is 866152376.

It can be written as a sum of positive squares in 2 ways, for example, as 498271684 + 174979984 = 22322^2 + 13228^2 .

It is a hoax number, since the sum of its digits (44) 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35696 + ... + 51192.

It is an arithmetic number, because the mean of its divisors is an integer number (98197911).

Almost surely, 2^673251668 is an apocalyptic number.

It is an amenable number.

673251668 is a deficient number, since it is larger than the sum of its proper divisors (505123264).

673251668 is a wasteful number, since it uses less digits than its factorization.

673251668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26362 (or 26360 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 673251668 is about 25947.0936330064. The cubic root of 673251668 is about 876.4473105243.

The spelling of 673251668 in words is "six hundred seventy-three million, two hundred fifty-one thousand, six hundred sixty-eight".