681115207 has 8 divisors (see below), whose sum is σ = 692359200. Its totient is φ = 669960480.

The previous prime is 681115187. The next prime is 681115219. The reversal of 681115207 is 702511186.

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 681115207 - 2²³ = 672726599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681115507) 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, 6844 + ... + 37537.

It is an arithmetic number, because the mean of its divisors is an integer number (86544900).

Almost surely, 2^681115207 is an apocalyptic number.

681115207 is a deficient number, since it is larger than the sum of its proper divisors (11243993).

681115207 is a wasteful number, since it uses less digits than its factorization.

681115207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44633.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 681115207 is about 26098.1839789668. The cubic root of 681115207 is about 879.8463949355.

The spelling of 681115207 in words is "six hundred eighty-one million, one hundred fifteen thousand, two hundred seven".