2747987 has 8 divisors (see below), whose sum is σ = 3022272. Its totient is φ = 2477800.

The previous prime is 2747977. The next prime is 2748013. The reversal of 2747987 is 7897472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2747987 - 2⁶ = 2747923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2747947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (377784).

2^2747987 is an apocalyptic number.

2747987 is a deficient number, since it is larger than the sum of its proper divisors (274285).

2747987 is a wasteful number, since it uses less digits than its factorization.

2747987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049.

The product of its digits is 197568, while the sum is 44.

The square root of 2747987 is about 1657.7053417299. The cubic root of 2747987 is about 140.0677733084.

The spelling of 2747987 in words is "two million, seven hundred forty-seven thousand, nine hundred eighty-seven".