640286316 has 48 divisors (see below), whose sum is σ = 1676147200. Its totient is φ = 211352976.

The previous prime is 640286293. The next prime is 640286327. The reversal of 640286316 is 613682046.

640286316 is a `hidden beast` number, since 64 + 0 + 286 + 316 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17656 + ... + 39903.

Almost surely, 2^640286316 is an apocalyptic number.

It is an amenable number.

640286316 is an abundant number, since it is smaller than the sum of its proper divisors (1035860884).

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

640286316 is a wasteful number, since it uses less digits than its factorization.

640286316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57675 (or 57667 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 640286316 is about 25303.8794654100. The cubic root of 640286316 is about 861.9023670876.

The spelling of 640286316 in words is "six hundred forty million, two hundred eighty-six thousand, three hundred sixteen".