646112214 has 96 divisors (see below), whose sum is σ = 1667352960. Its totient is φ = 185457600.

The previous prime is 646112213. The next prime is 646112231. The reversal of 646112214 is 412211646.

646112214 is a `hidden beast` number, since 646 + 1 + 1 + 2 + 2 + 14 = 666.

646112214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646112213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98394 + ... + 104754.

It is an arithmetic number, because the mean of its divisors is an integer number (17368260).

Almost surely, 2^646112214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646112214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833676480).

646112214 is an abundant number, since it is smaller than the sum of its proper divisors (1021240746).

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

646112214 is a wasteful number, since it uses less digits than its factorization.

646112214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408 (or 6396 counting only the distinct ones).

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

The square root of 646112214 is about 25418.7374588118. The cubic root of 646112214 is about 864.5085981218.

The spelling of 646112214 in words is "six hundred forty-six million, one hundred twelve thousand, two hundred fourteen".