2740987 has 2 divisors, whose sum is σ = 2740988. Its totient is φ = 2740986.

The previous prime is 2740957. The next prime is 2740999. The reversal of 2740987 is 7890472.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2740987 - 2¹⁹ = 2216699 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2740937) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370493 + 1370494.

It is an arithmetic number, because the mean of its divisors is an integer number (1370494).

2^2740987 is an apocalyptic number.

2740987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740987 is an equidigital number, since it uses as much as digits as its factorization.

2740987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2740987 is about 1655.5926431342. The cubic root of 2740987 is about 139.9487397370.

It can be divided in two parts, 27 and 40987, that added together give a palindrome (41014).

The spelling of 2740987 in words is "two million, seven hundred forty thousand, nine hundred eighty-seven".