2661427 has 2 divisors, whose sum is σ = 2661428. Its totient is φ = 2661426.

The previous prime is 2661419. The next prime is 2661457. The reversal of 2661427 is 7241662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661427 - 2³ = 2661419 is a prime.

It is a Chen prime.

2661427 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2661395 and 2661404.

It is not a weakly prime, because it can be changed into another prime (2661457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330713 + 1330714.

It is an arithmetic number, because the mean of its divisors is an integer number (1330714).

2^2661427 is an apocalyptic number.

2661427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661427 is an equidigital number, since it uses as much as digits as its factorization.

2661427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 2661427 is about 1631.3880592918. The cubic root of 2661427 is about 138.5813707699.

The spelling of 2661427 in words is "two million, six hundred sixty-one thousand, four hundred twenty-seven".