711655991 has 2 divisors, whose sum is σ = 711655992. Its totient is φ = 711655990.

The previous prime is 711655979. The next prime is 711656003. The reversal of 711655991 is 199556117.

It is a balanced prime because it is at equal distance from previous prime (711655979) and next prime (711656003).

It is a cyclic number.

It is not a de Polignac number, because 711655991 - 2⁶ = 711655927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (711655961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355827995 + 355827996.

It is an arithmetic number, because the mean of its divisors is an integer number (355827996).

Almost surely, 2^711655991 is an apocalyptic number.

711655991 is a deficient number, since it is larger than the sum of its proper divisors (1).

711655991 is an equidigital number, since it uses as much as digits as its factorization.

711655991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 44.

The square root of 711655991 is about 26676.8812082672. The cubic root of 711655991 is about 892.8051839179.

The spelling of 711655991 in words is "seven hundred eleven million, six hundred fifty-five thousand, nine hundred ninety-one".