640160343 has 12 divisors (see below), whose sum is σ = 924927640. Its totient is φ = 426657456.

The previous prime is 640160333. The next prime is 640160359. The reversal of 640160343 is 343061046.

640160343 is a `hidden beast` number, since 640 + 16 + 0 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 640160343 - 2²⁴ = 623383127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640160303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37188 + ... + 51606.

Almost surely, 2^640160343 is an apocalyptic number.

640160343 is a deficient number, since it is larger than the sum of its proper divisors (284767297).

640160343 is a wasteful number, since it uses less digits than its factorization.

640160343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19358 (or 19355 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 640160343 is about 25301.3901396741. The cubic root of 640160343 is about 861.8458384453.

The spelling of 640160343 in words is "six hundred forty million, one hundred sixty thousand, three hundred forty-three".