36604409 has 4 divisors (see below), whose sum is σ = 37866660. Its totient is φ = 35342160.

The previous prime is 36604387. The next prime is 36604427. The reversal of 36604409 is 90440663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90440663 = 17 ⋅5320039.

It can be written as a sum of positive squares in 2 ways, for example, as 16605625 + 19998784 = 4075^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 36604409 - 2⁸ = 36604153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36604439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631082 + ... + 631139.

It is an arithmetic number, because the mean of its divisors is an integer number (9466665).

Almost surely, 2^36604409 is an apocalyptic number.

It is an amenable number.

36604409 is a deficient number, since it is larger than the sum of its proper divisors (1262251).

36604409 is a wasteful number, since it uses less digits than its factorization.

36604409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262250.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 36604409 is about 6050.1577665380. The cubic root of 36604409 is about 332.0303626608.

The spelling of 36604409 in words is "thirty-six million, six hundred four thousand, four hundred nine".