681586866302 has 4 divisors (see below), whose sum is σ = 1022380299456. Its totient is φ = 340793433150.

The previous prime is 681586866299. The next prime is 681586866329. The reversal of 681586866302 is 203668685186.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170396716574 + ... + 170396716577.

It is an arithmetic number, because the mean of its divisors is an integer number (255595074864).

Almost surely, 2^681586866302 is an apocalyptic number.

681586866302 is a deficient number, since it is larger than the sum of its proper divisors (340793433154).

681586866302 is a wasteful number, since it uses less digits than its factorization.

681586866302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340793433153.

The product of its (nonzero) digits is 19906560, while the sum is 59.

The spelling of 681586866302 in words is "six hundred eighty-one billion, five hundred eighty-six million, eight hundred sixty-six thousand, three hundred two".