640146300 has 36 divisors (see below), whose sum is σ = 1852157496. Its totient is φ = 170705600.

The previous prime is 640146293. The next prime is 640146317. The reversal of 640146300 is 3641046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066611 + ... + 1067210.

Almost surely, 2^640146300 is an apocalyptic number.

640146300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

640146300 is an abundant number, since it is smaller than the sum of its proper divisors (1212011196).

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

640146300 is a wasteful number, since it uses less digits than its factorization.

640146300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133838 (or 2133831 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 640146300 is about 25301.1126237563. The cubic root of 640146300 is about 861.8395363838.

Adding to 640146300 its reverse (3641046), we get a palindrome (643787346).

The spelling of 640146300 in words is "six hundred forty million, one hundred forty-six thousand, three hundred".