673655408 has 20 divisors (see below), whose sum is σ = 1307341920. Its totient is φ = 336276864.

The previous prime is 673655407. The next prime is 673655417. The reversal of 673655408 is 804556376.

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 not an unprimeable number, because it can be changed into a prime (673655407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24248 + ... + 43991.

It is an arithmetic number, because the mean of its divisors is an integer number (65367096).

Almost surely, 2^673655408 is an apocalyptic number.

It is an amenable number.

673655408 is a deficient number, since it is larger than the sum of its proper divisors (633686512).

673655408 is a wasteful number, since it uses less digits than its factorization.

673655408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68864 (or 68858 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 673655408 is about 25954.8725290647. The cubic root of 673655408 is about 876.6224734156.

The spelling of 673655408 in words is "six hundred seventy-three million, six hundred fifty-five thousand, four hundred eight".