681270566 has 8 divisors (see below), whose sum is σ = 1049525040. Its totient is φ = 331428888.

The previous prime is 681270547. The next prime is 681270607. The reversal of 681270566 is 665072186.

681270566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4603106 + ... + 4603253.

It is an arithmetic number, because the mean of its divisors is an integer number (131190630).

Almost surely, 2^681270566 is an apocalyptic number.

681270566 is a deficient number, since it is larger than the sum of its proper divisors (368254474).

681270566 is a wasteful number, since it uses less digits than its factorization.

681270566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9206398.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 681270566 is about 26101.1602424107. The cubic root of 681270566 is about 879.9132860493.

The spelling of 681270566 in words is "six hundred eighty-one million, two hundred seventy thousand, five hundred sixty-six".