690607 has 2 divisors, whose sum is σ = 690608. Its totient is φ = 690606.

The previous prime is 690589. The next prime is 690611. The reversal of 690607 is 706096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690607 - 2¹⁹ = 166319 is a prime.

It is a Chen prime.

690607 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345303 + 345304.

It is an arithmetic number, because the mean of its divisors is an integer number (345304).

2⁶⁹⁰⁶⁰⁷ is an apocalyptic number.

690607 is a deficient number, since it is larger than the sum of its proper divisors (1).

690607 is an equidigital number, since it uses as much as digits as its factorization.

690607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 690607 is about 831.0276770361. The cubic root of 690607 is about 88.3914636557.

The spelling of 690607 in words is "six hundred ninety thousand, six hundred seven".