6428650216 has 8 divisors (see below), whose sum is σ = 12053719170. Its totient is φ = 3214325104.

The previous prime is 6428650169. The next prime is 6428650219. The reversal of 6428650216 is 6120568246.

It can be written as a sum of positive squares in only one way, i.e., 5249002500 + 1179647716 = 72450^2 + 34346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×6428650216³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6428650219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401790631 + ... + 401790646.

Almost surely, 2^6428650216 is an apocalyptic number.

It is an amenable number.

6428650216 is a deficient number, since it is larger than the sum of its proper divisors (5625068954).

6428650216 is a wasteful number, since it uses less digits than its factorization.

6428650216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803581283 (or 803581279 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6428650216 is about 80178.8638981621. The cubic root of 6428650216 is about 1859.4018788275.

The spelling of 6428650216 in words is "six billion, four hundred twenty-eight million, six hundred fifty thousand, two hundred sixteen".