190806677 has 2 divisors, whose sum is σ = 190806678. Its totient is φ = 190806676.

The previous prime is 190806673. The next prime is 190806713. The reversal of 190806677 is 776608091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188265841 + 2540836 = 13721^2 + 1594^2 .

It is a cyclic number.

It is not a de Polignac number, because 190806677 - 2² = 190806673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190806673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95403338 + 95403339.

It is an arithmetic number, because the mean of its divisors is an integer number (95403339).

Almost surely, 2^190806677 is an apocalyptic number.

It is an amenable number.

190806677 is a deficient number, since it is larger than the sum of its proper divisors (1).

190806677 is an equidigital number, since it uses as much as digits as its factorization.

190806677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 190806677 is about 13813.2790097066. The cubic root of 190806677 is about 575.7021562077.

The spelling of 190806677 in words is "one hundred ninety million, eight hundred six thousand, six hundred seventy-seven".