2986645 has 16 divisors (see below), whose sum is σ = 3891888. Its totient is φ = 2191360.

The previous prime is 2986637. The next prime is 2986657. The reversal of 2986645 is 5466892.

It is a happy number.

2986645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7569 + 2979076 = 87^2 + 1726^2 .

It is not a de Polignac number, because 2986645 - 2³ = 2986637 is a prime.

It is a Duffinian number.

2986645 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2986598 and 2986607.

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 in 15 ways as a sum of consecutive naturals, for example, 3057 + ... + 3913.

It is an arithmetic number, because the mean of its divisors is an integer number (243243).

2^2986645 is an apocalyptic number.

It is an amenable number.

2986645 is a deficient number, since it is larger than the sum of its proper divisors (905243).

2986645 is a wasteful number, since it uses less digits than its factorization.

2986645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 103680, while the sum is 40.

The square root of 2986645 is about 1728.1912509905. The cubic root of 2986645 is about 144.0106248590.

The spelling of 2986645 in words is "two million, nine hundred eighty-six thousand, six hundred forty-five".