5646640203 has 12 divisors (see below), whose sum is σ = 8158390240. Its totient is φ = 3763442736.

The previous prime is 5646640183. The next prime is 5646640211. The reversal of 5646640203 is 3020466465.

5646640203 is a `hidden beast` number, since 5 + 6 + 4 + 6 + 640 + 2 + 0 + 3 = 666.

It is not a de Polignac number, because 5646640203 - 2¹³ = 5646632011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5646640243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44776 + ... + 115317.

Almost surely, 2^5646640203 is an apocalyptic number.

5646640203 is a deficient number, since it is larger than the sum of its proper divisors (2511750037).

5646640203 is a wasteful number, since it uses less digits than its factorization.

5646640203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164018 (or 164015 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 5646640203 is about 75144.1295311883. The cubic root of 5646640203 is about 1780.7243825024.

It can be divided in two parts, 56466 and 40203, that added together give a palindrome (96669).

The spelling of 5646640203 in words is "five billion, six hundred forty-six million, six hundred forty thousand, two hundred three".