2978603 has 4 divisors (see below), whose sum is σ = 2991840. Its totient is φ = 2965368.

The previous prime is 2978593. The next prime is 2978627. The reversal of 2978603 is 3068792.

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 2978603 - 2⁶ = 2978539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2978683) 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 3 ways as a sum of consecutive naturals, for example, 6275 + ... + 6732.

It is an arithmetic number, because the mean of its divisors is an integer number (747960).

2^2978603 is an apocalyptic number.

2978603 is a deficient number, since it is larger than the sum of its proper divisors (13237).

2978603 is a wasteful number, since it uses less digits than its factorization.

2978603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13236.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2978603 is about 1725.8629725445. The cubic root of 2978603 is about 143.8812517680.

The spelling of 2978603 in words is "two million, nine hundred seventy-eight thousand, six hundred three".