640003024 has 20 divisors (see below), whose sum is σ = 1241101120. Its totient is φ = 319718880.

The previous prime is 640003019. The next prime is 640003027. The reversal of 640003024 is 420300046.

640003024 is a modest number, since divided by 3024 gives 640 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 640002992 and 640003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640003027) 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, 1657 + ... + 35815.

It is an arithmetic number, because the mean of its divisors is an integer number (62055056).

Almost surely, 2^640003024 is an apocalyptic number.

It is an amenable number.

640003024 is a deficient number, since it is larger than the sum of its proper divisors (601098096).

640003024 is a wasteful number, since it uses less digits than its factorization.

640003024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35338 (or 35332 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 640003024 is about 25298.2810483242. The cubic root of 640003024 is about 861.7752333045.

The spelling of 640003024 in words is "six hundred forty million, three thousand, twenty-four".