3564009 has 6 divisors (see below), whose sum is σ = 5148026. Its totient is φ = 2376000.

The previous prime is 3563993. The next prime is 3564017. The reversal of 3564009 is 9004653.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 1617984 = 1395^2 + 1272^2 .

It is not a de Polignac number, because 3564009 - 2⁴ = 3563993 is a prime.

It is a Duffinian number.

3564009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3564019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197992 + ... + 198009.

Almost surely, 2^3564009 is an apocalyptic number.

It is an amenable number.

3564009 is a deficient number, since it is larger than the sum of its proper divisors (1584017).

3564009 is a wasteful number, since it uses less digits than its factorization.

3564009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396007 (or 396004 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3564009 is about 1887.8583103612. The cubic root of 3564009 is about 152.7494296665.

Subtracting from 3564009 its product of nonzero digits (3240), we obtain a square (3560769 = 1887²).

It can be divided in two parts, 356400 and 9, that added together give a square (356409 = 597²).

The spelling of 3564009 in words is "three million, five hundred sixty-four thousand, nine".