2656463 has 4 divisors (see below), whose sum is σ = 2660160. Its totient is φ = 2652768.

The previous prime is 2656457. The next prime is 2656499. The reversal of 2656463 is 3646562.

Added to its reverse (3646562) it gives a triangular number (6303025 = T₃₅₅₀).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3646562 = 2 ⋅1823281.

It is a cyclic number.

It is not a de Polignac number, because 2656463 - 2⁶ = 2656399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656453) 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, 383 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (665040).

2^2656463 is an apocalyptic number.

2656463 is a deficient number, since it is larger than the sum of its proper divisors (3697).

2656463 is an equidigital number, since it uses as much as digits as its factorization.

2656463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696.

The product of its digits is 25920, while the sum is 32.

The square root of 2656463 is about 1629.8659454078. The cubic root of 2656463 is about 138.4951581151.

Adding to 2656463 its reverse (3646562), we get a triangular number (6303025 = T₃₅₅₀).

Subtracting 2656463 from its reverse (3646562), we obtain a palindrome (990099).

The spelling of 2656463 in words is "two million, six hundred fifty-six thousand, four hundred sixty-three".