681072653227 has 8 divisors (see below), whose sum is σ = 691268609936. Its totient is φ = 670877599392.

The previous prime is 681072653161. The next prime is 681072653237. The reversal of 681072653227 is 722356270186.

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

It is a cyclic number.

It is not a de Polignac number, because 681072653227 - 2⁷ = 681072653099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681072653237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378993 + ... + 1806589.

It is an arithmetic number, because the mean of its divisors is an integer number (86408576242).

Almost surely, 2^681072653227 is an apocalyptic number.

681072653227 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

681072653227 is a deficient number, since it is larger than the sum of its proper divisors (10195956709).

681072653227 is a wasteful number, since it uses less digits than its factorization.

681072653227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451437.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 681072653227 in words is "six hundred eighty-one billion, seventy-two million, six hundred fifty-three thousand, two hundred twenty-seven".