2698671691 has 2 divisors, whose sum is σ = 2698671692. Its totient is φ = 2698671690.

The previous prime is 2698671683. The next prime is 2698671697. The reversal of 2698671691 is 1961768962.

2698671691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2698671691 - 2³ = 2698671683 is a prime.

It is not a weakly prime, because it can be changed into another prime (2698671697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349335845 + 1349335846.

It is an arithmetic number, because the mean of its divisors is an integer number (1349335846).

Almost surely, 2^2698671691 is an apocalyptic number.

2698671691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2698671691 is an equidigital number, since it uses as much as digits as its factorization.

2698671691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The square root of 2698671691 is about 51948.7409953312. The cubic root of 2698671691 is about 1392.2482620999.

The spelling of 2698671691 in words is "two billion, six hundred ninety-eight million, six hundred seventy-one thousand, six hundred ninety-one".