185680897 has 2 divisors, whose sum is σ = 185680898. Its totient is φ = 185680896.

The previous prime is 185680867. The next prime is 185680907. The reversal of 185680897 is 798086581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112338801 + 73342096 = 10599^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 185680897 - 2⁷ = 185680769 is a prime.

It is not a weakly prime, because it can be changed into another prime (185680867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92840448 + 92840449.

It is an arithmetic number, because the mean of its divisors is an integer number (92840449).

Almost surely, 2^185680897 is an apocalyptic number.

It is an amenable number.

185680897 is a deficient number, since it is larger than the sum of its proper divisors (1).

185680897 is an equidigital number, since it uses as much as digits as its factorization.

185680897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 52.

The square root of 185680897 is about 13626.4777914177. The cubic root of 185680897 is about 570.5001222590.

The spelling of 185680897 in words is "one hundred eighty-five million, six hundred eighty thousand, eight hundred ninety-seven".