2723987 has 4 divisors (see below), whose sum is σ = 3113136. Its totient is φ = 2334840.

The previous prime is 2723969. The next prime is 2723989. The reversal of 2723987 is 7893272.

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 2723987 - 2⁶ = 2723923 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 2723987.

It is not an unprimeable number, because it can be changed into a prime (2723989) 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, 194564 + ... + 194577.

It is an arithmetic number, because the mean of its divisors is an integer number (778284).

2^2723987 is an apocalyptic number.

2723987 is a deficient number, since it is larger than the sum of its proper divisors (389149).

2723987 is an equidigital number, since it uses as much as digits as its factorization.

2723987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389148.

The product of its digits is 42336, while the sum is 38.

The square root of 2723987 is about 1650.4505445484. The cubic root of 2723987 is about 139.6588120381.

The spelling of 2723987 in words is "two million, seven hundred twenty-three thousand, nine hundred eighty-seven".