2690611697 has 2 divisors, whose sum is σ = 2690611698. Its totient is φ = 2690611696.

The previous prime is 2690611681. The next prime is 2690611711. The reversal of 2690611697 is 7961160962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684199521 + 1006412176 = 41039^2 + 31724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690611697 - 2⁴ = 2690611681 is a prime.

It is not a weakly prime, because it can be changed into another prime (2690611667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345305848 + 1345305849.

It is an arithmetic number, because the mean of its divisors is an integer number (1345305849).

Almost surely, 2^2690611697 is an apocalyptic number.

It is an amenable number.

2690611697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690611697 is an equidigital number, since it uses as much as digits as its factorization.

2690611697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 2690611697 is about 51871.1065719635. The cubic root of 2690611697 is about 1390.8608260963.

The spelling of 2690611697 in words is "two billion, six hundred ninety million, six hundred eleven thousand, six hundred ninety-seven".