646484246 has 8 divisors (see below), whose sum is σ = 969864840. Its totient is φ = 323195968.

The previous prime is 646484213. The next prime is 646484257. The reversal of 646484246 is 642484646.

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

It is a junction number, because it is equal to n+sod(n) for n = 646484197 and 646484206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 35991.

It is an arithmetic number, because the mean of its divisors is an integer number (121233105).

Almost surely, 2^646484246 is an apocalyptic number.

646484246 is a deficient number, since it is larger than the sum of its proper divisors (323380594).

646484246 is a wasteful number, since it uses less digits than its factorization.

646484246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46158.

The product of its digits is 884736, while the sum is 44.

The square root of 646484246 is about 25426.0544717422. The cubic root of 646484246 is about 864.6744945635.

The spelling of 646484246 in words is "six hundred forty-six million, four hundred eighty-four thousand, two hundred forty-six".