6406060665 has 32 divisors (see below), whose sum is σ = 10494950400. Its totient is φ = 3334919616.

The previous prime is 6406060651. The next prime is 6406060669. The reversal of 6406060665 is 5660606046.

It is not a de Polignac number, because 6406060665 - 2⁹ = 6406060153 is a prime.

It is a super-2 number, since 2×6406060665² = 82075226487320484450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6406060669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1560786 + ... + 1564884.

It is an arithmetic number, because the mean of its divisors is an integer number (327967200).

Almost surely, 2^6406060665 is an apocalyptic number.

It is an amenable number.

6406060665 is a deficient number, since it is larger than the sum of its proper divisors (4088889735).

6406060665 is a wasteful number, since it uses less digits than its factorization.

6406060665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6573.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 6406060665 is about 80037.8701928031. The cubic root of 6406060665 is about 1857.2214134409.

The spelling of 6406060665 in words is "six billion, four hundred six million, sixty thousand, six hundred sixty-five".