681806283 has 4 divisors (see below), whose sum is σ = 909075048. Its totient is φ = 454537520.

The previous prime is 681806249. The next prime is 681806309. The reversal of 681806283 is 382608186.

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

It is a cyclic number.

It is not a de Polignac number, because 681806283 - 2¹⁰ = 681805259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681806243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113634378 + ... + 113634383.

It is an arithmetic number, because the mean of its divisors is an integer number (227268762).

Almost surely, 2^681806283 is an apocalyptic number.

681806283 is a deficient number, since it is larger than the sum of its proper divisors (227268765).

681806283 is a wasteful number, since it uses less digits than its factorization.

681806283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227268764.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 681806283 is about 26111.4205473391. The cubic root of 681806283 is about 880.1438655114.

The spelling of 681806283 in words is "six hundred eighty-one million, eight hundred six thousand, two hundred eighty-three".