2617663 has 4 divisors (see below), whose sum is σ = 2632968. Its totient is φ = 2602360.

The previous prime is 2617651. The next prime is 2617673. The reversal of 2617663 is 3667162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3667162 = 2 ⋅1833581.

It is a cyclic number.

It is not a de Polignac number, because 2617663 - 2⁵ = 2617631 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 (2617603) 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, 7393 + ... + 7738.

It is an arithmetic number, because the mean of its divisors is an integer number (658242).

2^2617663 is an apocalyptic number.

2617663 is a deficient number, since it is larger than the sum of its proper divisors (15305).

2617663 is a wasteful number, since it uses less digits than its factorization.

2617663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15304.

The product of its digits is 9072, while the sum is 31.

The square root of 2617663 is about 1617.9193428598. The cubic root of 2617663 is about 137.8175668168.

It can be divided in two parts, 26 and 17663, that added together give a square (17689 = 133²).

The spelling of 2617663 in words is "two million, six hundred seventeen thousand, six hundred sixty-three".