681290463 has 24 divisors (see below), whose sum is σ = 1057711152. Its totient is φ = 388934784.

The previous prime is 681290459. The next prime is 681290473. The reversal of 681290463 is 364092186.

It is not a de Polignac number, because 681290463 - 2² = 681290459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681290413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242181 + ... + 244977.

It is an arithmetic number, because the mean of its divisors is an integer number (44071298).

Almost surely, 2^681290463 is an apocalyptic number.

681290463 is a deficient number, since it is larger than the sum of its proper divisors (376420689).

681290463 is a wasteful number, since it uses less digits than its factorization.

681290463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471 (or 4464 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 681290463 is about 26101.5413912665. The cubic root of 681290463 is about 879.9218521340.

The spelling of 681290463 in words is "six hundred eighty-one million, two hundred ninety thousand, four hundred sixty-three".