2634561 has 12 divisors (see below), whose sum is σ = 3827200. Its totient is φ = 1746360.

The previous prime is 2634557. The next prime is 2634607. The reversal of 2634561 is 1654362.

It is not a de Polignac number, because 2634561 - 2² = 2634557 is a prime.

It is a super-4 number, since 4×2634561⁴ (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2634551) 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, 1056 + ... + 2526.

2^2634561 is an apocalyptic number.

It is an amenable number.

2634561 is a deficient number, since it is larger than the sum of its proper divisors (1192639).

2634561 is a wasteful number, since it uses less digits than its factorization.

2634561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1673 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2634561 is about 1623.1330814200. The cubic root of 2634561 is about 138.1134857283.

The spelling of 2634561 in words is "two million, six hundred thirty-four thousand, five hundred sixty-one".