673662305813 has 16 divisors (see below), whose sum is σ = 794803322880. Its totient is φ = 558750366000.

The previous prime is 673662305677. The next prime is 673662305831. The reversal of 673662305813 is 318503266376.

It is a cyclic number.

It is not a de Polignac number, because 673662305813 - 2²⁰ = 673661257237 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673662305873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2529038 + ... + 2782688.

It is an arithmetic number, because the mean of its divisors is an integer number (49675207680).

Almost surely, 2^673662305813 is an apocalyptic number.

It is an amenable number.

673662305813 is a deficient number, since it is larger than the sum of its proper divisors (121141017067).

673662305813 is a wasteful number, since it uses less digits than its factorization.

673662305813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265928.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 673662305813 in words is "six hundred seventy-three billion, six hundred sixty-two million, three hundred five thousand, eight hundred thirteen".