673509608 has 8 divisors (see below), whose sum is σ = 1262830530. Its totient is φ = 336754800.

The previous prime is 673509593. The next prime is 673509611. The reversal of 673509608 is 806905376.

It can be written as a sum of positive squares in only one way, i.e., 602309764 + 71199844 = 24542^2 + 8438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42094343 + ... + 42094358.

Almost surely, 2^673509608 is an apocalyptic number.

It is an amenable number.

673509608 is a deficient number, since it is larger than the sum of its proper divisors (589320922).

673509608 is a wasteful number, since it uses less digits than its factorization.

673509608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84188707 (or 84188703 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 673509608 is about 25952.0636559022. The cubic root of 673509608 is about 876.5592260555.

The spelling of 673509608 in words is "six hundred seventy-three million, five hundred nine thousand, six hundred eight".