2471987 has 8 divisors (see below), whose sum is σ = 2991456. Its totient is φ = 1994112.

The previous prime is 2471983. The next prime is 2471993. The reversal of 2471987 is 7891742.

2471987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2471987 - 2² = 2471983 is a prime.

It is a super-2 number, since 2×2471987² = 12221439456338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2471987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2471983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10268 + ... + 10505.

It is an arithmetic number, because the mean of its divisors is an integer number (373932).

2^2471987 is an apocalyptic number.

2471987 is a deficient number, since it is larger than the sum of its proper divisors (519469).

2471987 is a wasteful number, since it uses less digits than its factorization.

2471987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797.

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

The square root of 2471987 is about 1572.2553863797. The cubic root of 2471987 is about 135.2120490119.

The spelling of 2471987 in words is "two million, four hundred seventy-one thousand, nine hundred eighty-seven".