2978566 has 4 divisors (see below), whose sum is σ = 4467852. Its totient is φ = 1489282.

The previous prime is 2978551. The next prime is 2978593. The reversal of 2978566 is 6658792.

2978566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 744640 + ... + 744643.

It is an arithmetic number, because the mean of its divisors is an integer number (1116963).

2^2978566 is an apocalyptic number.

2978566 is a deficient number, since it is larger than the sum of its proper divisors (1489286).

2978566 is a wasteful number, since it uses less digits than its factorization.

2978566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489285.

The product of its digits is 181440, while the sum is 43.

The square root of 2978566 is about 1725.8522532361. The cubic root of 2978566 is about 143.8806560045.

The spelling of 2978566 in words is "two million, nine hundred seventy-eight thousand, five hundred sixty-six".