2689667 has 2 divisors, whose sum is σ = 2689668. Its totient is φ = 2689666.

The previous prime is 2689657. The next prime is 2689679. The reversal of 2689667 is 7669862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2689667 - 2⁴ = 2689651 is a prime.

It is not a weakly prime, because it can be changed into another prime (2689637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344833 + 1344834.

It is an arithmetic number, because the mean of its divisors is an integer number (1344834).

2^2689667 is an apocalyptic number.

2689667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689667 is an equidigital number, since it uses as much as digits as its factorization.

2689667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 2689667 is about 1640.0204267021. The cubic root of 2689667 is about 139.0698025959.

The spelling of 2689667 in words is "two million, six hundred eighty-nine thousand, six hundred sixty-seven".