673656650 has 48 divisors (see below), whose sum is σ = 1288464408. Its totient is φ = 261888000.

The previous prime is 673656649. The next prime is 673656667. The reversal of 673656650 is 56656376.

It can be written as a sum of positive squares in 12 ways, for example, as 23049601 + 650607049 = 4801^2 + 25507^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764210 + ... + 765090.

Almost surely, 2^673656650 is an apocalyptic number.

673656650 is a deficient number, since it is larger than the sum of its proper divisors (614807758).

673656650 is a wasteful number, since it uses less digits than its factorization.

673656650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The square root of 673656650 is about 25954.8964551970. The cubic root of 673656650 is about 876.6230121502.

The spelling of 673656650 in words is "six hundred seventy-three million, six hundred fifty-six thousand, six hundred fifty".