646236006 has 32 divisors (see below), whose sum is σ = 1429518048. Its totient is φ = 193466880.

The previous prime is 646235963. The next prime is 646236007. The reversal of 646236006 is 600632646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646236007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109075 + ... + 114846.

It is an arithmetic number, because the mean of its divisors is an integer number (44672439).

Almost surely, 2^646236006 is an apocalyptic number.

646236006 is an abundant number, since it is smaller than the sum of its proper divisors (783282042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646236006 is a wasteful number, since it uses less digits than its factorization.

646236006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223976.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 646236006 is about 25421.1723962527. The cubic root of 646236006 is about 864.5638064958.

The spelling of 646236006 in words is "six hundred forty-six million, two hundred thirty-six thousand, six".