673643799 has 6 divisors (see below), whose sum is σ = 973041056. Its totient is φ = 449095860.

The previous prime is 673643777. The next prime is 673643807. The reversal of 673643799 is 997346376.

It is not a de Polignac number, because 673643799 - 2⁹ = 673643287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673643749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37424647 + ... + 37424664.

Almost surely, 2^673643799 is an apocalyptic number.

673643799 is a deficient number, since it is larger than the sum of its proper divisors (299397257).

673643799 is a wasteful number, since it uses less digits than its factorization.

673643799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74849317 (or 74849314 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 54.

The square root of 673643799 is about 25954.6488899388. The cubic root of 673643799 is about 876.6174378200.

The spelling of 673643799 in words is "six hundred seventy-three million, six hundred forty-three thousand, seven hundred ninety-nine".