673400618788 has 12 divisors (see below), whose sum is σ = 1210301112412. Its totient is φ = 327600300960.

The previous prime is 673400618749. The next prime is 673400618791. The reversal of 673400618788 is 887816004376.

It can be written as a sum of positive squares in 2 ways, for example, as 325255777344 + 348144841444 = 570312^2 + 590038^2 .

It is a super-2 number, since 2×673400618788² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2275001943 + ... + 2275002238.

Almost surely, 2^673400618788 is an apocalyptic number.

It is an amenable number.

673400618788 is a deficient number, since it is larger than the sum of its proper divisors (536900493624).

673400618788 is a wasteful number, since it uses less digits than its factorization.

673400618788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550004222 (or 4550004220 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 673400618788 in words is "six hundred seventy-three billion, four hundred million, six hundred eighteen thousand, seven hundred eighty-eight".