643474315 has 8 divisors (see below), whose sum is σ = 842366448. Its totient is φ = 467981280.

The previous prime is 643474303. The next prime is 643474357. The reversal of 643474315 is 513474346.

643474315 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 643474315 - 2¹¹ = 643472267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5849712 + ... + 5849821.

It is an arithmetic number, because the mean of its divisors is an integer number (105295806).

Almost surely, 2^643474315 is an apocalyptic number.

643474315 is a deficient number, since it is larger than the sum of its proper divisors (198892133).

643474315 is a wasteful number, since it uses less digits than its factorization.

643474315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11699549.

The product of its digits is 120960, while the sum is 37.

The square root of 643474315 is about 25366.7955209167. The cubic root of 643474315 is about 863.3304761645.

The spelling of 643474315 in words is "six hundred forty-three million, four hundred seventy-four thousand, three hundred fifteen".