681118297 has 16 divisors (see below), whose sum is σ = 721214208. Its totient is φ = 641963520.

The previous prime is 681118283. The next prime is 681118307. The reversal of 681118297 is 792811186.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 681118297 - 2²⁷ = 546900569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681118247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570333 + ... + 571525.

It is an arithmetic number, because the mean of its divisors is an integer number (45075888).

Almost surely, 2^681118297 is an apocalyptic number.

It is an amenable number.

681118297 is a deficient number, since it is larger than the sum of its proper divisors (40095911).

681118297 is a wasteful number, since it uses less digits than its factorization.

681118297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its digits is 48384, while the sum is 43.

The square root of 681118297 is about 26098.2431784210. The cubic root of 681118297 is about 879.8477254599.

The spelling of 681118297 in words is "six hundred eighty-one million, one hundred eighteen thousand, two hundred ninety-seven".