2599963 has 4 divisors (see below), whose sum is σ = 2752920. Its totient is φ = 2447008.

The previous prime is 2599931. The next prime is 2599973. The reversal of 2599963 is 3699952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2599963 - 2⁵ = 2599931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2599973) 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, 76453 + ... + 76486.

It is an arithmetic number, because the mean of its divisors is an integer number (688230).

2^2599963 is an apocalyptic number.

2599963 is a deficient number, since it is larger than the sum of its proper divisors (152957).

2599963 is a wasteful number, since it uses less digits than its factorization.

2599963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152956.

The product of its digits is 131220, while the sum is 43.

The square root of 2599963 is about 1612.4400764059. The cubic root of 2599963 is about 137.5062344281.

It can be divided in two parts, 25999 and 63, that added together give a palindrome (26062).

The spelling of 2599963 in words is "two million, five hundred ninety-nine thousand, nine hundred sixty-three".