646236007 has 2 divisors, whose sum is σ = 646236008. Its totient is φ = 646236006.

The previous prime is 646235963. The next prime is 646236047. The reversal of 646236007 is 700632646.

646236007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646236007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646236047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323118003 + 323118004.

It is an arithmetic number, because the mean of its divisors is an integer number (323118004).

Almost surely, 2^646236007 is an apocalyptic number.

646236007 is a deficient number, since it is larger than the sum of its proper divisors (1).

646236007 is an equidigital number, since it uses as much as digits as its factorization.

646236007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 646236007 is about 25421.1724159213. The cubic root of 646236007 is about 864.5638069417.

The spelling of 646236007 in words is "six hundred forty-six million, two hundred thirty-six thousand, seven".