690630313 has 2 divisors, whose sum is σ = 690630314. Its totient is φ = 690630312.

The previous prime is 690630251. The next prime is 690630319. The reversal of 690630313 is 313036096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616876569 + 73753744 = 24837^2 + 8588^2 .

It is a cyclic number.

It is not a de Polignac number, because 690630313 - 2⁹ = 690629801 is a prime.

It is not a weakly prime, because it can be changed into another prime (690630319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345315156 + 345315157.

It is an arithmetic number, because the mean of its divisors is an integer number (345315157).

Almost surely, 2^690630313 is an apocalyptic number.

It is an amenable number.

690630313 is a deficient number, since it is larger than the sum of its proper divisors (1).

690630313 is an equidigital number, since it uses as much as digits as its factorization.

690630313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 690630313 is about 26279.8461372969. The cubic root of 690630313 is about 883.9245826237.

The spelling of 690630313 in words is "six hundred ninety million, six hundred thirty thousand, three hundred thirteen".