640828412614 has 8 divisors (see below), whose sum is σ = 1035184358880. Its totient is φ = 295766959656.

The previous prime is 640828412597. The next prime is 640828412617. The reversal of 640828412614 is 416214828046.

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

It is a super-2 number, since 2×640828412614² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640828412617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12323623294 + ... + 12323623345.

It is an arithmetic number, because the mean of its divisors is an integer number (129398044860).

Almost surely, 2^640828412614 is an apocalyptic number.

640828412614 is a deficient number, since it is larger than the sum of its proper divisors (394355946266).

640828412614 is a wasteful number, since it uses less digits than its factorization.

640828412614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24647246654.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 640828412614 in words is "six hundred forty billion, eight hundred twenty-eight million, four hundred twelve thousand, six hundred fourteen".