646530949606 has 4 divisors (see below), whose sum is σ = 969796424412. Its totient is φ = 323265474802.

The previous prime is 646530949577. The next prime is 646530949667. The reversal of 646530949606 is 606949035646.

646530949606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×646530949606² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161632737400 + ... + 161632737403.

It is an arithmetic number, because the mean of its divisors is an integer number (242449106103).

Almost surely, 2^646530949606 is an apocalyptic number.

646530949606 is a deficient number, since it is larger than the sum of its proper divisors (323265474806).

646530949606 is a wasteful number, since it uses less digits than its factorization.

646530949606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323265474805.

The product of its (nonzero) digits is 25194240, while the sum is 58.

The spelling of 646530949606 in words is "six hundred forty-six billion, five hundred thirty million, nine hundred forty-nine thousand, six hundred six".