2947691 has 2 divisors, whose sum is σ = 2947692. Its totient is φ = 2947690.

The previous prime is 2947673. The next prime is 2947709. The reversal of 2947691 is 1967492.

It is a balanced prime because it is at equal distance from previous prime (2947673) and next prime (2947709).

It is a cyclic number.

It is not a de Polignac number, because 2947691 - 2¹⁰ = 2946667 is a prime.

It is not a weakly prime, because it can be changed into another prime (2947601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473845 + 1473846.

It is an arithmetic number, because the mean of its divisors is an integer number (1473846).

2^2947691 is an apocalyptic number.

2947691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947691 is an equidigital number, since it uses as much as digits as its factorization.

2947691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 2947691 is about 1716.8840962628. The cubic root of 2947691 is about 143.3817857946.

The spelling of 2947691 in words is "two million, nine hundred forty-seven thousand, six hundred ninety-one".