2404021665 has 16 divisors (see below), whose sum is σ = 3847491648. Its totient is φ = 1281792576.

The previous prime is 2404021657. The next prime is 2404021687. The reversal of 2404021665 is 5661204042.

2404021665 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 2404021665 - 2³ = 2404021657 is a prime.

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, 40027 + ... + 80063.

It is an arithmetic number, because the mean of its divisors is an integer number (240468228).

Almost surely, 2^2404021665 is an apocalyptic number.

It is an amenable number.

2404021665 is a deficient number, since it is larger than the sum of its proper divisors (1443469983).

2404021665 is a wasteful number, since it uses less digits than its factorization.

2404021665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44048.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2404021665 is about 49030.8236214731. The cubic root of 2404021665 is about 1339.6133259078.

The spelling of 2404021665 in words is "two billion, four hundred four million, twenty-one thousand, six hundred sixty-five".