673611633 has 10 divisors (see below), whose sum is σ = 1006259474. Its totient is φ = 449074368.

The previous prime is 673611619. The next prime is 673611691. The reversal of 673611633 is 336116376.

673611633 is a `hidden beast` number, since 6 + 7 + 3 + 6 + 11 + 633 = 666.

It can be written as a sum of positive squares in only one way, i.e., 382124304 + 291487329 = 19548^2 + 17073^2 .

It is not a de Polignac number, because 673611633 - 2⁶ = 673611569 is a prime.

It is a super-2 number, since 2×673611633² = 907505264225853378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673611613) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4158016 + ... + 4158177.

Almost surely, 2^673611633 is an apocalyptic number.

It is an amenable number.

673611633 is a deficient number, since it is larger than the sum of its proper divisors (332647841).

673611633 is an equidigital number, since it uses as much as digits as its factorization.

673611633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316205 (or 8316196 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 673611633 is about 25954.0292247659. The cubic root of 673611633 is about 876.6034849835.

The spelling of 673611633 in words is "six hundred seventy-three million, six hundred eleven thousand, six hundred thirty-three".