2661634 has 16 divisors (see below), whose sum is σ = 4255200. Its totient is φ = 1245024.

The previous prime is 2661611. The next prime is 2661641. The reversal of 2661634 is 4361662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2989 + ... + 3775.

It is an arithmetic number, because the mean of its divisors is an integer number (265950).

2^2661634 is an apocalyptic number.

2661634 is a deficient number, since it is larger than the sum of its proper divisors (1593566).

2661634 is a wasteful number, since it uses less digits than its factorization.

2661634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897.

The product of its digits is 5184, while the sum is 28.

The square root of 2661634 is about 1631.4515009647. The cubic root of 2661634 is about 138.5849635292.

Adding to 2661634 its sum of digits (28), we get a palindrome (2661662).

The spelling of 2661634 in words is "two million, six hundred sixty-one thousand, six hundred thirty-four".