681701763058 has 4 divisors (see below), whose sum is σ = 1022552644590. Its totient is φ = 340850881528.

The previous prime is 681701763049. The next prime is 681701763137. The reversal of 681701763058 is 850367107186.

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

It can be written as a sum of positive squares in only one way, i.e., 565800326809 + 115901436249 = 752197^2 + 340443^2 .

It is a super-3 number, since 3×681701763058³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 681701762996 and 681701763014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170425440763 + ... + 170425440766.

Almost surely, 2^681701763058 is an apocalyptic number.

681701763058 is a deficient number, since it is larger than the sum of its proper divisors (340850881532).

681701763058 is a wasteful number, since it uses less digits than its factorization.

681701763058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340850881531.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 681701763058 in words is "six hundred eighty-one billion, seven hundred one million, seven hundred sixty-three thousand, fifty-eight".