355438665 has 32 divisors (see below), whose sum is σ = 659370240. Its totient is φ = 181323648.

The previous prime is 355438663. The next prime is 355438667. The reversal of 355438665 is 566834553.

355438665 is a `hidden beast` number, since 3 + 554 + 38 + 6 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (355438663) and next prime (355438667).

It is not a de Polignac number, because 355438665 - 2¹ = 355438663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 355438665.

It is not an unprimeable number, because it can be changed into a prime (355438663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54132 + ... + 60341.

It is an arithmetic number, because the mean of its divisors is an integer number (20605320).

Almost surely, 2^355438665 is an apocalyptic number.

It is an amenable number.

355438665 is a deficient number, since it is larger than the sum of its proper divisors (303931575).

355438665 is a wasteful number, since it uses less digits than its factorization.

355438665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114510 (or 114504 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 355438665 is about 18853.0810479348. The cubic root of 355438665 is about 708.3614033936.

The spelling of 355438665 in words is "three hundred fifty-five million, four hundred thirty-eight thousand, six hundred sixty-five".