186106997 has 2 divisors, whose sum is σ = 186106998. Its totient is φ = 186106996.

The previous prime is 186106993. The next prime is 186107021. The reversal of 186106997 is 799601681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97634161 + 88472836 = 9881^2 + 9406^2 .

It is a cyclic number.

It is not a de Polignac number, because 186106997 - 2² = 186106993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186106993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93053498 + 93053499.

It is an arithmetic number, because the mean of its divisors is an integer number (93053499).

Almost surely, 2^186106997 is an apocalyptic number.

It is an amenable number.

186106997 is a deficient number, since it is larger than the sum of its proper divisors (1).

186106997 is an equidigital number, since it uses as much as digits as its factorization.

186106997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 186106997 is about 13642.1038333536. The cubic root of 186106997 is about 570.9361828971.

The spelling of 186106997 in words is "one hundred eighty-six million, one hundred six thousand, nine hundred ninety-seven".