2986813 has 4 divisors (see below), whose sum is σ = 2993728. Its totient is φ = 2979900.

The previous prime is 2986811. The next prime is 2986817. The reversal of 2986813 is 3186892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2986813 - 2¹ = 2986811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2986811) 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, 2763 + ... + 3688.

It is an arithmetic number, because the mean of its divisors is an integer number (748432).

2^2986813 is an apocalyptic number.

It is an amenable number.

2986813 is a deficient number, since it is larger than the sum of its proper divisors (6915).

2986813 is an equidigital number, since it uses as much as digits as its factorization.

2986813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6914.

The product of its digits is 20736, while the sum is 37.

The square root of 2986813 is about 1728.2398560385. The cubic root of 2986813 is about 144.0133250272.

The spelling of 2986813 in words is "two million, nine hundred eighty-six thousand, eight hundred thirteen".