690630319 has 2 divisors, whose sum is σ = 690630320. Its totient is φ = 690630318.

The previous prime is 690630313. The next prime is 690630329. The reversal of 690630319 is 913036096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690630319 - 2¹⁷ = 690499247 is a prime.

It is a super-2 number, since 2×690630319² = 953940475044083522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690630313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345315159 + 345315160.

It is an arithmetic number, because the mean of its divisors is an integer number (345315160).

Almost surely, 2^690630319 is an apocalyptic number.

690630319 is a deficient number, since it is larger than the sum of its proper divisors (1).

690630319 is an equidigital number, since it uses as much as digits as its factorization.

690630319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 690630319 is about 26279.8462514528. The cubic root of 690630319 is about 883.9245851835.

The spelling of 690630319 in words is "six hundred ninety million, six hundred thirty thousand, three hundred nineteen".