640093413 has 16 divisors (see below), whose sum is σ = 899225280. Its totient is φ = 403887744.

The previous prime is 640093403. The next prime is 640093417. The reversal of 640093413 is 314390046.

It is not a de Polignac number, because 640093413 - 2¹⁷ = 639962341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640093417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63295 + ... + 72707.

It is an arithmetic number, because the mean of its divisors is an integer number (56201580).

Almost surely, 2^640093413 is an apocalyptic number.

It is an amenable number.

640093413 is a deficient number, since it is larger than the sum of its proper divisors (259131867).

640093413 is a wasteful number, since it uses less digits than its factorization.

640093413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 640093413 is about 25300.0674505030. The cubic root of 640093413 is about 861.8158015163.

The spelling of 640093413 in words is "six hundred forty million, ninety-three thousand, four hundred thirteen".