689901193 has 2 divisors, whose sum is σ = 689901194. Its totient is φ = 689901192.

The previous prime is 689901167. The next prime is 689901241. The reversal of 689901193 is 391109986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685025929 + 4875264 = 26173^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 689901193 - 2⁵ = 689901161 is a prime.

It is a super-2 number, since 2×689901193² = 951927312205646498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (689901133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344950596 + 344950597.

It is an arithmetic number, because the mean of its divisors is an integer number (344950597).

Almost surely, 2^689901193 is an apocalyptic number.

It is an amenable number.

689901193 is a deficient number, since it is larger than the sum of its proper divisors (1).

689901193 is an equidigital number, since it uses as much as digits as its factorization.

689901193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 689901193 is about 26265.9702466899. The cubic root of 689901193 is about 883.6134108268.

The spelling of 689901193 in words is "six hundred eighty-nine million, nine hundred one thousand, one hundred ninety-three".