339861661 has 2 divisors, whose sum is σ = 339861662. Its totient is φ = 339861660.

The previous prime is 339861631. The next prime is 339861679. The reversal of 339861661 is 166168933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312759225 + 27102436 = 17685^2 + 5206^2 .

It is a cyclic number.

It is not a de Polignac number, because 339861661 - 2⁵ = 339861629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (339861611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169930830 + 169930831.

It is an arithmetic number, because the mean of its divisors is an integer number (169930831).

Almost surely, 2^339861661 is an apocalyptic number.

It is an amenable number.

339861661 is a deficient number, since it is larger than the sum of its proper divisors (1).

339861661 is an equidigital number, since it uses as much as digits as its factorization.

339861661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 339861661 is about 18435.3372901067. The cubic root of 339861661 is about 697.8585309197.

The spelling of 339861661 in words is "three hundred thirty-nine million, eight hundred sixty-one thousand, six hundred sixty-one".