641221614 has 48 divisors (see below), whose sum is σ = 1595393280. Its totient is φ = 184081680.

The previous prime is 641221597. The next prime is 641221621. The reversal of 641221614 is 416122146.

641221614 is a `hidden beast` number, since 6 + 41 + 2 + 2 + 1 + 614 = 666.

641221614 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641221614² = 822330316521529992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81462 + ... + 88985.

It is an arithmetic number, because the mean of its divisors is an integer number (33237360).

Almost surely, 2^641221614 is an apocalyptic number.

641221614 is an abundant number, since it is smaller than the sum of its proper divisors (954171666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641221614 is a wasteful number, since it uses less digits than its factorization.

641221614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170485 (or 170482 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 641221614 is about 25322.3540374903. The cubic root of 641221614 is about 862.3218374284.

The spelling of 641221614 in words is "six hundred forty-one million, two hundred twenty-one thousand, six hundred fourteen".