2978563 has 12 divisors (see below), whose sum is σ = 3508920. Its totient is φ = 2520672.

The previous prime is 2978551. The next prime is 2978593. The reversal of 2978563 is 3658792.

2978563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2978563 - 2¹³ = 2970371 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2978533) 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 11 ways as a sum of consecutive naturals, for example, 4020 + ... + 4702.

It is an arithmetic number, because the mean of its divisors is an integer number (292410).

2^2978563 is an apocalyptic number.

2978563 is a deficient number, since it is larger than the sum of its proper divisors (530357).

2978563 is an equidigital number, since it uses as much as digits as its factorization.

2978563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 779 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 2978563 is about 1725.8513841000. The cubic root of 2978563 is about 143.8806076991.

The spelling of 2978563 in words is "two million, nine hundred seventy-eight thousand, five hundred sixty-three".