681603590935 has 8 divisors (see below), whose sum is σ = 821592132480. Its totient is φ = 542837657184.

The previous prime is 681603590923. The next prime is 681603590981. The reversal of 681603590935 is 539095306186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681603590935 - 2²⁹ = 681066720023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305650720 + ... + 305652949.

It is an arithmetic number, because the mean of its divisors is an integer number (102699016560).

Almost surely, 2^681603590935 is an apocalyptic number.

681603590935 is a deficient number, since it is larger than the sum of its proper divisors (139988541545).

681603590935 is a wasteful number, since it uses less digits than its factorization.

681603590935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611303897.

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 681603590935 in words is "six hundred eighty-one billion, six hundred three million, five hundred ninety thousand, nine hundred thirty-five".