2740631 has 2 divisors, whose sum is σ = 2740632. Its totient is φ = 2740630.

The previous prime is 2740607. The next prime is 2740643. The reversal of 2740631 is 1360472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2740631 - 2⁶ = 2740567 is a prime.

It is a super-2 number, since 2×2740631² = 15022116556322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2740597 and 2740606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2740601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370315 + 1370316.

It is an arithmetic number, because the mean of its divisors is an integer number (1370316).

2^2740631 is an apocalyptic number.

2740631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740631 is an equidigital number, since it uses as much as digits as its factorization.

2740631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 2740631 is about 1655.4851252730. The cubic root of 2740631 is about 139.9426806169.

The spelling of 2740631 in words is "two million, seven hundred forty thousand, six hundred thirty-one".