6650501643 has 24 divisors (see below), whose sum is σ = 10227593376. Its totient is φ = 4149792000.

The previous prime is 6650501633. The next prime is 6650501687. The reversal of 6650501643 is 3461050566.

6650501643 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 5 + 0 + 1 + 643 = 666.

It is not a de Polignac number, because 6650501643 - 2⁸ = 6650501387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6650501598 and 6650501607.

It is not an unprimeable number, because it can be changed into a prime (6650501603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92383 + ... + 147768.

It is an arithmetic number, because the mean of its divisors is an integer number (426149724).

Almost surely, 2^6650501643 is an apocalyptic number.

6650501643 is a deficient number, since it is larger than the sum of its proper divisors (3577091733).

6650501643 is a wasteful number, since it uses less digits than its factorization.

6650501643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240355 (or 240352 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 6650501643 is about 81550.6078640742. The cubic root of 6650501643 is about 1880.5496396342.

The spelling of 6650501643 in words is "six billion, six hundred fifty million, five hundred one thousand, six hundred forty-three".