5640632539 has 4 divisors (see below), whose sum is σ = 5885877456. Its totient is φ = 5395387624.

The previous prime is 5640632533. The next prime is 5640632563. The reversal of 5640632539 is 9352360465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5640632539 - 2³ = 5640632531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5640632495 and 5640632504.

It is not an unprimeable number, because it can be changed into a prime (5640632531) 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, 122622424 + ... + 122622469.

It is an arithmetic number, because the mean of its divisors is an integer number (1471469364).

Almost surely, 2^5640632539 is an apocalyptic number.

5640632539 is a deficient number, since it is larger than the sum of its proper divisors (245244917).

5640632539 is a wasteful number, since it uses less digits than its factorization.

5640632539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245244916.

The product of its (nonzero) digits is 583200, while the sum is 43.

The square root of 5640632539 is about 75104.1446193218. The cubic root of 5640632539 is about 1780.0926327881.

The spelling of 5640632539 in words is "five billion, six hundred forty million, six hundred thirty-two thousand, five hundred thirty-nine".