2697106681 has 2 divisors, whose sum is σ = 2697106682. Its totient is φ = 2697106680.

The previous prime is 2697106669. The next prime is 2697106697. The reversal of 2697106681 is 1866017962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2449359081 + 247747600 = 49491^2 + 15740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2697106681 - 2⁷ = 2697106553 is a prime.

It is a super-2 number, since 2×2697106681² = 14548768897389671522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2697106651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1348553340 + 1348553341.

It is an arithmetic number, because the mean of its divisors is an integer number (1348553341).

Almost surely, 2^2697106681 is an apocalyptic number.

It is an amenable number.

2697106681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2697106681 is an equidigital number, since it uses as much as digits as its factorization.

2697106681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2697106681 is about 51933.6757894143. The cubic root of 2697106681 is about 1391.9790798220.

The spelling of 2697106681 in words is "two billion, six hundred ninety-seven million, one hundred six thousand, six hundred eighty-one".