646286606 has 32 divisors (see below), whose sum is σ = 1119398400. Its totient is φ = 274125600.

The previous prime is 646286587. The next prime is 646286621. The reversal of 646286606 is 606682646.

It is a super-3 number, since 3×646286606³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023911 + ... + 1024541.

It is an arithmetic number, because the mean of its divisors is an integer number (34981200).

Almost surely, 2^646286606 is an apocalyptic number.

646286606 is a deficient number, since it is larger than the sum of its proper divisors (473111794).

646286606 is a wasteful number, since it uses less digits than its factorization.

646286606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its (nonzero) digits is 497664, while the sum is 44.

The square root of 646286606 is about 25422.1676101783. The cubic root of 646286606 is about 864.5863708977.

The spelling of 646286606 in words is "six hundred forty-six million, two hundred eighty-six thousand, six hundred six".