640114853 has 4 divisors (see below), whose sum is σ = 731559840. Its totient is φ = 548669868.

The previous prime is 640114847. The next prime is 640114861. The reversal of 640114853 is 358411046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 640114853 - 2⁸ = 640114597 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 (640114823) 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 3 ways as a sum of consecutive naturals, for example, 45722483 + ... + 45722496.

It is an arithmetic number, because the mean of its divisors is an integer number (182889960).

Almost surely, 2^640114853 is an apocalyptic number.

It is an amenable number.

640114853 is a deficient number, since it is larger than the sum of its proper divisors (91444987).

640114853 is an equidigital number, since it uses as much as digits as its factorization.

640114853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91444986.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 640114853 is about 25300.4911612403. The cubic root of 640114853 is about 861.8254236142.

Adding to 640114853 its reverse (358411046), we get a palindrome (998525899).

The spelling of 640114853 in words is "six hundred forty million, one hundred fourteen thousand, eight hundred fifty-three".