643209114 has 8 divisors (see below), whose sum is σ = 1286418240. Its totient is φ = 214403036.

The previous prime is 643209101. The next prime is 643209131. The reversal of 643209114 is 411902346.

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

643209114 is an admirable 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, 53600754 + ... + 53600765.

It is an arithmetic number, because the mean of its divisors is an integer number (160802280).

Almost surely, 2^643209114 is an apocalyptic number.

643209114 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.

643209114 is a wasteful number, since it uses less digits than its factorization.

643209114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107201524.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 643209114 is about 25361.5676565941. The cubic root of 643209114 is about 863.2118557516.

The spelling of 643209114 in words is "six hundred forty-three million, two hundred nine thousand, one hundred fourteen".