2563964 has 12 divisors (see below), whose sum is σ = 4832184. Its totient is φ = 1183344.

The previous prime is 2563943. The next prime is 2563969. The reversal of 2563964 is 4693652.

It is a super-2 number, since 2×2563964² = 13147822786592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563969) 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, 24602 + ... + 24705.

It is an arithmetic number, because the mean of its divisors is an integer number (402682).

2^2563964 is an apocalyptic number.

It is an amenable number.

2563964 is a deficient number, since it is larger than the sum of its proper divisors (2268220).

2563964 is a wasteful number, since it uses less digits than its factorization.

2563964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49324 (or 49322 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 2563964 is about 1601.2382708392. The cubic root of 2563964 is about 136.8686470784.

The spelling of 2563964 in words is "two million, five hundred sixty-three thousand, nine hundred sixty-four".