2456605 has 12 divisors (see below), whose sum is σ = 3113532. Its totient is φ = 1860480.

The previous prime is 2456591. The next prime is 2456609. The reversal of 2456605 is 5066542.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 1819801 = 798^2 + 1349^2 .

It is not a de Polignac number, because 2456605 - 2¹⁹ = 1932317 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 (2456609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1125 + ... + 2485.

It is an arithmetic number, because the mean of its divisors is an integer number (259461).

2^2456605 is an apocalyptic number.

It is an amenable number.

2456605 is a deficient number, since it is larger than the sum of its proper divisors (656927).

2456605 is a wasteful number, since it uses less digits than its factorization.

2456605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2456605 is about 1567.3560539967. The cubic root of 2456605 is about 134.9310118479.

The spelling of 2456605 in words is "two million, four hundred fifty-six thousand, six hundred five".