640224414 has 12 divisors (see below), whose sum is σ = 1387152936. Its totient is φ = 213408132.

The previous prime is 640224397. The next prime is 640224419. The reversal of 640224414 is 414422046.

It is a happy number.

640224414 is a `hidden beast` number, since 6 + 402 + 244 + 14 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640224419) 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 5 ways as a sum of consecutive naturals, for example, 17783994 + ... + 17784029.

It is an arithmetic number, because the mean of its divisors is an integer number (115596078).

Almost surely, 2^640224414 is an apocalyptic number.

640224414 is an abundant number, since it is smaller than the sum of its proper divisors (746928522).

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

640224414 is a wasteful number, since it uses less digits than its factorization.

640224414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35568031 (or 35568028 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 640224414 is about 25302.6562637206. The cubic root of 640224414 is about 861.8745903475.

The spelling of 640224414 in words is "six hundred forty million, two hundred twenty-four thousand, four hundred fourteen".