2647983 has 16 divisors (see below), whose sum is σ = 3893120. Its totient is φ = 1590624.

The previous prime is 2647969. The next prime is 2647987. The reversal of 2647983 is 3897462.

It is not a de Polignac number, because 2647983 - 2⁵ = 2647951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 4⁴ + 7 + 9⁴ + 8⁷ + 3⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2647987) 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 15 ways as a sum of consecutive naturals, for example, 888 + ... + 2466.

It is an arithmetic number, because the mean of its divisors is an integer number (243320).

2^2647983 is an apocalyptic number.

2647983 is a deficient number, since it is larger than the sum of its proper divisors (1245137).

2647983 is a wasteful number, since it uses less digits than its factorization.

2647983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638.

The product of its digits is 72576, while the sum is 39.

The square root of 2647983 is about 1627.2624250563. The cubic root of 2647983 is about 138.3476322698.

It can be divided in two parts, 26479 and 83, that added together give a palindrome (26562).

The spelling of 2647983 in words is "two million, six hundred forty-seven thousand, nine hundred eighty-three".