3563640 has 96 divisors (see below), whose sum is σ = 12214800. Its totient is φ = 898560.

The previous prime is 3563569. The next prime is 3563653. The reversal of 3563640 is 463653.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6580 + ... + 7100.

Almost surely, 2^3563640 is an apocalyptic number.

3563640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3563640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6107400).

3563640 is an abundant number, since it is smaller than the sum of its proper divisors (8651160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3563640 is a wasteful number, since it uses less digits than its factorization.

3563640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3563640 is about 1887.7605780395. The cubic root of 3563640 is about 152.7441578425.

The spelling of 3563640 in words is "three million, five hundred sixty-three thousand, six hundred forty".