600000640 has 32 divisors (see below), whose sum is σ = 1434378060. Its totient is φ = 240000000.

The previous prime is 600000617. The next prime is 600000659. The reversal of 600000640 is 46000006.

It can be written as a sum of positive squares in 2 ways, for example, as 490002496 + 109998144 = 22136^2 + 10488^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468111 + ... + 469390.

Almost surely, 2^600000640 is an apocalyptic number.

It is an amenable number.

600000640 is an abundant number, since it is smaller than the sum of its proper divisors (834377420).

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

600000640 is an equidigital number, since it uses as much as digits as its factorization.

600000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937520 (or 937508 counting only the distinct ones).

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

The square root of 600000640 is about 24494.9104917736. The cubic root of 600000640 is about 843.4329651888.

Adding to 600000640 its reverse (46000006), we get a palindrome (646000646).

The spelling of 600000640 in words is "six hundred million, six hundred forty", and thus it is an aban number.