3632666409 has 12 divisors (see below), whose sum is σ = 5256041076. Its totient is φ = 2417690112.

The previous prime is 3632666377. The next prime is 3632666423. The reversal of 3632666409 is 9046662363.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3121680384 + 510986025 = 55872^2 + 22605^2 .

It is not a de Polignac number, because 3632666409 - 2⁵ = 3632666377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3632666489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334992 + ... + 345665.

It is an arithmetic number, because the mean of its divisors is an integer number (438003423).

Almost surely, 2^3632666409 is an apocalyptic number.

It is an amenable number.

3632666409 is a deficient number, since it is larger than the sum of its proper divisors (1623374667).

3632666409 is a wasteful number, since it uses less digits than its factorization.

3632666409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681256 (or 681253 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The square root of 3632666409 is about 60271.6053295414. The cubic root of 3632666409 is about 1537.2405761781.

The spelling of 3632666409 in words is "three billion, six hundred thirty-two million, six hundred sixty-six thousand, four hundred nine".