690943711 has 2 divisors, whose sum is σ = 690943712. Its totient is φ = 690943710.

The previous prime is 690943703. The next prime is 690943723. The reversal of 690943711 is 117349096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690943711 - 2³ = 690943703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690943751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345471855 + 345471856.

It is an arithmetic number, because the mean of its divisors is an integer number (345471856).

Almost surely, 2^690943711 is an apocalyptic number.

690943711 is a deficient number, since it is larger than the sum of its proper divisors (1).

690943711 is an equidigital number, since it uses as much as digits as its factorization.

690943711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 690943711 is about 26285.8081671460. The cubic root of 690943711 is about 884.0582664481.

The spelling of 690943711 in words is "six hundred ninety million, nine hundred forty-three thousand, seven hundred eleven".