382640345 has 8 divisors (see below), whose sum is σ = 459573576. Its totient is φ = 305842176.

The previous prime is 382640327. The next prime is 382640387. The reversal of 382640345 is 543046283.

It can be written as a sum of positive squares in 4 ways, for example, as 196672576 + 185967769 = 14024^2 + 13637^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 382640345 - 2¹⁰ = 382639321 is a prime.

It is a Duffinian number.

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, 27422 + ... + 38951.

It is an arithmetic number, because the mean of its divisors is an integer number (57446697).

Almost surely, 2^382640345 is an apocalyptic number.

It is an amenable number.

382640345 is a deficient number, since it is larger than the sum of its proper divisors (76933231).

382640345 is a wasteful number, since it uses less digits than its factorization.

382640345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67531.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 382640345 is about 19561.1948765918. The cubic root of 382640345 is about 725.9893555852.

The spelling of 382640345 in words is "three hundred eighty-two million, six hundred forty thousand, three hundred forty-five".