646505547206 has 16 divisors (see below), whose sum is σ = 974682297600. Its totient is φ = 321611617800.

The previous prime is 646505547203. The next prime is 646505547239. The reversal of 646505547206 is 602745505646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646505547203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11652431 + ... + 11707781.

It is an arithmetic number, because the mean of its divisors is an integer number (60917643600).

Almost surely, 2^646505547206 is an apocalyptic number.

646505547206 is a deficient number, since it is larger than the sum of its proper divisors (328176750394).

646505547206 is a wasteful number, since it uses less digits than its factorization.

646505547206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84899.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 646505547206 in words is "six hundred forty-six billion, five hundred five million, five hundred forty-seven thousand, two hundred six".