646310233 has 8 divisors (see below), whose sum is σ = 685698048. Its totient is φ = 607074624.

The previous prime is 646310221. The next prime is 646310261. The reversal of 646310233 is 332013646.

646310233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 646310233 - 2⁵ = 646310201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646310263) 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, 29241 + ... + 46342.

It is an arithmetic number, because the mean of its divisors is an integer number (85712256).

Almost surely, 2^646310233 is an apocalyptic number.

It is an amenable number.

646310233 is a deficient number, since it is larger than the sum of its proper divisors (39387815).

646310233 is a wasteful number, since it uses less digits than its factorization.

646310233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76103.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 646310233 is about 25422.6322988002. The cubic root of 646310233 is about 864.5969066430.

Adding to 646310233 its reverse (332013646), we get a palindrome (978323879).

The spelling of 646310233 in words is "six hundred forty-six million, three hundred ten thousand, two hundred thirty-three".