690790013 has 2 divisors, whose sum is σ = 690790014. Its totient is φ = 690790012.

The previous prime is 690790003. The next prime is 690790091. The reversal of 690790013 is 310097096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573219364 + 117570649 = 23942^2 + 10843^2 .

It is a cyclic number.

It is not a de Polignac number, because 690790013 - 2²² = 686595709 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690790003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345395006 + 345395007.

It is an arithmetic number, because the mean of its divisors is an integer number (345395007).

Almost surely, 2^690790013 is an apocalyptic number.

It is an amenable number.

690790013 is a deficient number, since it is larger than the sum of its proper divisors (1).

690790013 is an equidigital number, since it uses as much as digits as its factorization.

690790013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 690790013 is about 26282.8844117232. The cubic root of 690790013 is about 883.9927097022.

The spelling of 690790013 in words is "six hundred ninety million, seven hundred ninety thousand, thirteen".