640024612 has 12 divisors (see below), whose sum is σ = 1125352816. Its totient is φ = 318495240.

The previous prime is 640024603. The next prime is 640024613. The reversal of 640024612 is 216420046.

It is not an unprimeable number, because it can be changed into a prime (640024613) 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, 378318 + ... + 380005.

Almost surely, 2^640024612 is an apocalyptic number.

It is an amenable number.

640024612 is a deficient number, since it is larger than the sum of its proper divisors (485328204).

640024612 is a wasteful number, since it uses less digits than its factorization.

640024612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758538 (or 758536 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 640024612 is about 25298.7077140316. The cubic root of 640024612 is about 861.7849227350.

Adding to 640024612 its reverse (216420046), we get a palindrome (856444658).

The spelling of 640024612 in words is "six hundred forty million, twenty-four thousand, six hundred twelve".