673533993 has 16 divisors (see below), whose sum is σ = 1011290112. Its totient is φ = 395034000.

The previous prime is 673533967. The next prime is 673534003. The reversal of 673533993 is 399335376.

It is not a de Polignac number, because 673533993 - 2⁹ = 673533481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673533493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328173 + ... + 330218.

It is an arithmetic number, because the mean of its divisors is an integer number (63205632).

Almost surely, 2^673533993 is an apocalyptic number.

It is an amenable number.

673533993 is a deficient number, since it is larger than the sum of its proper divisors (337756119).

673533993 is a wasteful number, since it uses less digits than its factorization.

673533993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658436.

The product of its digits is 1377810, while the sum is 48.

The square root of 673533993 is about 25952.5334601460. The cubic root of 673533993 is about 876.5698047904.

The spelling of 673533993 in words is "six hundred seventy-three million, five hundred thirty-three thousand, nine hundred ninety-three".