109807657 has 2 divisors, whose sum is σ = 109807658. Its totient is φ = 109807656.

The previous prime is 109807639. The next prime is 109807661. The reversal of 109807657 is 756708901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71503936 + 38303721 = 8456^2 + 6189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109807657 is a prime.

It is not a weakly prime, because it can be changed into another prime (109807627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54903828 + 54903829.

It is an arithmetic number, because the mean of its divisors is an integer number (54903829).

Almost surely, 2^109807657 is an apocalyptic number.

It is an amenable number.

109807657 is a deficient number, since it is larger than the sum of its proper divisors (1).

109807657 is an equidigital number, since it uses as much as digits as its factorization.

109807657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 109807657 is about 10478.9148770281. The cubic root of 109807657 is about 478.8625512362.

The spelling of 109807657 in words is "one hundred nine million, eight hundred seven thousand, six hundred fifty-seven".