640003112 has 48 divisors (see below), whose sum is σ = 1430008020. Its totient is φ = 267590400.

The previous prime is 640003093. The next prime is 640003141. The reversal of 640003112 is 211300046.

It can be written as a sum of positive squares in 2 ways, for example, as 614742436 + 25260676 = 24794^2 + 5026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3839 + ... + 35982.

Almost surely, 2^640003112 is an apocalyptic number.

It is an amenable number.

640003112 is an abundant number, since it is smaller than the sum of its proper divisors (790004908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640003112 is a wasteful number, since it uses less digits than its factorization.

640003112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39882 (or 39871 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 640003112 is about 25298.2827875728. The cubic root of 640003112 is about 861.7752728023.

Adding to 640003112 its reverse (211300046), we get a palindrome (851303158).

The spelling of 640003112 in words is "six hundred forty million, three thousand, one hundred twelve".