3561634 has 4 divisors (see below), whose sum is σ = 5342454. Its totient is φ = 1780816.

The previous prime is 3561631. The next prime is 3561641. The reversal of 3561634 is 4361653.

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., 3404025 + 157609 = 1845^2 + 397^2 .

It is not an unprimeable number, because it can be changed into a prime (3561631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890407 + ... + 890410.

Almost surely, 2^3561634 is an apocalyptic number.

3561634 is a deficient number, since it is larger than the sum of its proper divisors (1780820).

3561634 is a wasteful number, since it uses less digits than its factorization.

3561634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780819.

The product of its digits is 6480, while the sum is 28.

The square root of 3561634 is about 1887.2291858701. The cubic root of 3561634 is about 152.7154921812.

The spelling of 3561634 in words is "three million, five hundred sixty-one thousand, six hundred thirty-four".