2847661 has 2 divisors, whose sum is σ = 2847662. Its totient is φ = 2847660.

The previous prime is 2847643. The next prime is 2847671. The reversal of 2847661 is 1667482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2499561 + 348100 = 1581^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2847661 - 2¹³ = 2839469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2847601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1423830 + 1423831.

It is an arithmetic number, because the mean of its divisors is an integer number (1423831).

2^2847661 is an apocalyptic number.

It is an amenable number.

2847661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2847661 is an equidigital number, since it uses as much as digits as its factorization.

2847661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 2847661 is about 1687.5014074068. The cubic root of 2847661 is about 141.7411969230.

The spelling of 2847661 in words is "two million, eight hundred forty-seven thousand, six hundred sixty-one".