115806997 has 2 divisors, whose sum is σ = 115806998. Its totient is φ = 115806996.

The previous prime is 115806989. The next prime is 115807031. The reversal of 115806997 is 799608511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115111441 + 695556 = 10729^2 + 834^2 .

It is a cyclic number.

It is not a de Polignac number, because 115806997 - 2³ = 115806989 is a prime.

It is a super-2 number, since 2×115806997² = 26822521108316018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115806937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57903498 + 57903499.

It is an arithmetic number, because the mean of its divisors is an integer number (57903499).

Almost surely, 2^115806997 is an apocalyptic number.

It is an amenable number.

115806997 is a deficient number, since it is larger than the sum of its proper divisors (1).

115806997 is an equidigital number, since it uses as much as digits as its factorization.

115806997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 115806997 is about 10761.3659448975. The cubic root of 115806997 is about 487.4292645123.

The spelling of 115806997 in words is "one hundred fifteen million, eight hundred six thousand, nine hundred ninety-seven".