689082349 has 2 divisors, whose sum is σ = 689082350. Its totient is φ = 689082348.

The previous prime is 689082313. The next prime is 689082371. The reversal of 689082349 is 943280986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638572900 + 50509449 = 25270^2 + 7107^2 .

It is a cyclic number.

It is not a de Polignac number, because 689082349 - 2⁷ = 689082221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689082049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344541174 + 344541175.

It is an arithmetic number, because the mean of its divisors is an integer number (344541175).

Almost surely, 2^689082349 is an apocalyptic number.

It is an amenable number.

689082349 is a deficient number, since it is larger than the sum of its proper divisors (1).

689082349 is an equidigital number, since it uses as much as digits as its factorization.

689082349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 689082349 is about 26250.3780734678. The cubic root of 689082349 is about 883.2636853911.

The spelling of 689082349 in words is "six hundred eighty-nine million, eighty-two thousand, three hundred forty-nine".