424005665 has 8 divisors (see below), whose sum is σ = 526352040. Its totient is φ = 327507712.

The previous prime is 424005643. The next prime is 424005679. The reversal of 424005665 is 566500424.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 423989281 = 128^2 + 20591^2 .

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 424005665 - 2¹⁰ = 424004641 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1461944 + ... + 1462233.

It is an arithmetic number, because the mean of its divisors is an integer number (65794005).

Almost surely, 2^424005665 is an apocalyptic number.

It is an amenable number.

424005665 is a deficient number, since it is larger than the sum of its proper divisors (102346375).

424005665 is a wasteful number, since it uses less digits than its factorization.

424005665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924211.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 424005665 is about 20591.3978398748. The cubic root of 424005665 is about 751.2604966404.

The spelling of 424005665 in words is "four hundred twenty-four million, five thousand, six hundred sixty-five".