646827395 has 16 divisors (see below), whose sum is σ = 803893248. Its totient is φ = 499306080.

The previous prime is 646827361. The next prime is 646827487. The reversal of 646827395 is 593728646.

It is a happy number.

646827395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646827395 - 2¹⁶ = 646761859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2699 + ... + 36068.

It is an arithmetic number, because the mean of its divisors is an integer number (50243328).

Almost surely, 2^646827395 is an apocalyptic number.

646827395 is a deficient number, since it is larger than the sum of its proper divisors (157065853).

646827395 is a wasteful number, since it uses less digits than its factorization.

646827395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38890.

The product of its digits is 2177280, while the sum is 50.

The square root of 646827395 is about 25432.8015562580. The cubic root of 646827395 is about 864.8274550870.

The spelling of 646827395 in words is "six hundred forty-six million, eight hundred twenty-seven thousand, three hundred ninety-five".