640000600 has 24 divisors (see below), whose sum is σ = 1488001860. Its totient is φ = 256000160.

The previous prime is 640000597. The next prime is 640000607. The reversal of 640000600 is 6000046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640000607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1599802 + ... + 1600201.

Almost surely, 2^640000600 is an apocalyptic number.

It is an amenable number.

640000600 is an abundant number, since it is smaller than the sum of its proper divisors (848001260).

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

640000600 is a wasteful number, since it uses less digits than its factorization.

640000600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200019 (or 3200010 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 640000600 is about 25298.2331398855. The cubic root of 640000600 is about 861.7741453170.

Adding to 640000600 its reverse (6000046), we get a palindrome (646000646).

The spelling of 640000600 in words is "six hundred forty million, six hundred", and thus it is an aban number.