643222014 has 8 divisors (see below), whose sum is σ = 1286444040. Its totient is φ = 214407336.

The previous prime is 643222009. The next prime is 643222051. The reversal of 643222014 is 410222346.

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

643222014 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53601829 + ... + 53601840.

It is an arithmetic number, because the mean of its divisors is an integer number (160805505).

Almost surely, 2^643222014 is an apocalyptic number.

643222014 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

643222014 is a wasteful number, since it uses less digits than its factorization.

643222014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107203674.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 643222014 is about 25361.8219771372. The cubic root of 643222014 is about 863.2176264816.

The spelling of 643222014 in words is "six hundred forty-three million, two hundred twenty-two thousand, fourteen".