646352245 has 16 divisors (see below), whose sum is σ = 967010688. Its totient is φ = 402920640.

The previous prime is 646352207. The next prime is 646352299. The reversal of 646352245 is 542253646.

646352245 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 646352245 - 2¹¹ = 646350197 is a prime.

It is a congruent 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, 839034 + ... + 839803.

It is an arithmetic number, because the mean of its divisors is an integer number (60438168).

Almost surely, 2^646352245 is an apocalyptic number.

It is an amenable number.

646352245 is a deficient number, since it is larger than the sum of its proper divisors (320658443).

646352245 is a wasteful number, since it uses less digits than its factorization.

646352245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678860.

The product of its digits is 172800, while the sum is 37.

The square root of 646352245 is about 25423.4585570099. The cubic root of 646352245 is about 864.6156399883.

The spelling of 646352245 in words is "six hundred forty-six million, three hundred fifty-two thousand, two hundred forty-five".