115640617 has 2 divisors, whose sum is σ = 115640618. Its totient is φ = 115640616.

The previous prime is 115640597. The next prime is 115640621. The reversal of 115640617 is 716046511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101284096 + 14356521 = 10064^2 + 3789^2 .

It is a cyclic number.

It is not a de Polignac number, because 115640617 - 2⁷ = 115640489 is a prime.

It is not a weakly prime, because it can be changed into another prime (115640627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57820308 + 57820309.

It is an arithmetic number, because the mean of its divisors is an integer number (57820309).

Almost surely, 2^115640617 is an apocalyptic number.

It is an amenable number.

115640617 is a deficient number, since it is larger than the sum of its proper divisors (1).

115640617 is an equidigital number, since it uses as much as digits as its factorization.

115640617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 115640617 is about 10753.6327350342. The cubic root of 115640617 is about 487.1957226358.

The spelling of 115640617 in words is "one hundred fifteen million, six hundred forty thousand, six hundred seventeen".