673983565 has 8 divisors (see below), whose sum is σ = 811099800. Its totient is φ = 537640512.

The previous prime is 673983553. The next prime is 673983587. The reversal of 673983565 is 565389376.

It can be written as a sum of positive squares in 4 ways, for example, as 49533444 + 624450121 = 7038^2 + 24989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673983565 - 2⁵ = 673983533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191374 + ... + 194863.

It is an arithmetic number, because the mean of its divisors is an integer number (101387475).

Almost surely, 2^673983565 is an apocalyptic number.

It is an amenable number.

673983565 is a deficient number, since it is larger than the sum of its proper divisors (137116235).

673983565 is a wasteful number, since it uses less digits than its factorization.

673983565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386591.

The product of its digits is 4082400, while the sum is 52.

The square root of 673983565 is about 25961.1934432915. The cubic root of 673983565 is about 876.7647930148.

The spelling of 673983565 in words is "six hundred seventy-three million, nine hundred eighty-three thousand, five hundred sixty-five".