673401735685 has 192 divisors, whose sum is σ = 1086182369280. Its totient is φ = 396717834240.

The previous prime is 673401735661. The next prime is 673401735697. The reversal of 673401735685 is 586537104376.

It is a happy number.

It is not a de Polignac number, because 673401735685 - 2¹⁷ = 673401604613 is a prime.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 767846467 + ... + 767847343.

It is an arithmetic number, because the mean of its divisors is an integer number (5657199840).

Almost surely, 2^673401735685 is an apocalyptic number.

It is an amenable number.

673401735685 is a deficient number, since it is larger than the sum of its proper divisors (412780633595).

673401735685 is a wasteful number, since it uses less digits than its factorization.

673401735685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 673401735685 in words is "six hundred seventy-three billion, four hundred one million, seven hundred thirty-five thousand, six hundred eighty-five".