640124353 has 8 divisors (see below), whose sum is σ = 698633280. Its totient is φ = 581668080.

The previous prime is 640124347. The next prime is 640124389. The reversal of 640124353 is 353421046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-640124353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640124333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14868 + ... + 38746.

It is an arithmetic number, because the mean of its divisors is an integer number (87329160).

Almost surely, 2^640124353 is an apocalyptic number.

It is an amenable number.

640124353 is a deficient number, since it is larger than the sum of its proper divisors (58508927).

640124353 is a wasteful number, since it uses less digits than its factorization.

640124353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26327.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 640124353 is about 25300.6789039346. The cubic root of 640124353 is about 861.8296870684.

Adding to 640124353 its reverse (353421046), we get a palindrome (993545399).

The spelling of 640124353 in words is "six hundred forty million, one hundred twenty-four thousand, three hundred fifty-three".