2705813 has 4 divisors (see below), whose sum is σ = 2951808. Its totient is φ = 2459820.

The previous prime is 2705779. The next prime is 2705819. The reversal of 2705813 is 3185072.

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 not a de Polignac number, because 2705813 - 2¹⁰ = 2704789 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 (2705819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122981 + ... + 123002.

It is an arithmetic number, because the mean of its divisors is an integer number (737952).

2^2705813 is an apocalyptic number.

It is an amenable number.

2705813 is a deficient number, since it is larger than the sum of its proper divisors (245995).

2705813 is a wasteful number, since it uses less digits than its factorization.

2705813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245994.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2705813 is about 1644.9355610479. The cubic root of 2705813 is about 139.3475250661.

The spelling of 2705813 in words is "two million, seven hundred five thousand, eight hundred thirteen".