690611 has 2 divisors, whose sum is σ = 690612. Its totient is φ = 690610.

The previous prime is 690607. The next prime is 690629. The reversal of 690611 is 116096.

690611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690611 - 2² = 690607 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690611.

It is not a weakly prime, because it can be changed into another prime (690661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345305 + 345306.

It is an arithmetic number, because the mean of its divisors is an integer number (345306).

2⁶⁹⁰⁶¹¹ is an apocalyptic number.

690611 is a deficient number, since it is larger than the sum of its proper divisors (1).

690611 is an equidigital number, since it uses as much as digits as its factorization.

690611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 690611 is about 831.0300836913. The cubic root of 690611 is about 88.3916343100.

The spelling of 690611 in words is "six hundred ninety thousand, six hundred eleven".