2791487 has 4 divisors (see below), whose sum is σ = 2912880. Its totient is φ = 2670096.

The previous prime is 2791483. The next prime is 2791493. The reversal of 2791487 is 7841972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2791487 - 2² = 2791483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2791487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60662 + ... + 60707.

It is an arithmetic number, because the mean of its divisors is an integer number (728220).

2^2791487 is an apocalyptic number.

2791487 is a deficient number, since it is larger than the sum of its proper divisors (121393).

2791487 is a wasteful number, since it uses less digits than its factorization.

2791487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121392.

The product of its digits is 28224, while the sum is 38.

The square root of 2791487 is about 1670.7743713620. The cubic root of 2791487 is about 140.8029875991.

The spelling of 2791487 in words is "two million, seven hundred ninety-one thousand, four hundred eighty-seven".