2005634 has 4 divisors (see below), whose sum is σ = 3008454. Its totient is φ = 1002816.

The previous prime is 2005613. The next prime is 2005667. The reversal of 2005634 is 4365002.

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

It can be written as a sum of positive squares in only one way, i.e., 1288225 + 717409 = 1135^2 + 847^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501407 + ... + 501410.

2^2005634 is an apocalyptic number.

2005634 is a deficient number, since it is larger than the sum of its proper divisors (1002820).

2005634 is a wasteful number, since it uses less digits than its factorization.

2005634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002819.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2005634 is about 1416.2040813386. The cubic root of 2005634 is about 126.1103006597.

The spelling of 2005634 in words is "two million, five thousand, six hundred thirty-four".