9406618665 has 16 divisors (see below), whose sum is σ = 15231924288. Its totient is φ = 4956418496.

The previous prime is 9406618657. The next prime is 9406618679. The reversal of 9406618665 is 5668166049.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9406618665 - 2³ = 9406618657 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, 3776514 + ... + 3779003.

It is an arithmetic number, because the mean of its divisors is an integer number (951995268).

Almost surely, 2^9406618665 is an apocalyptic number.

It is an amenable number.

9406618665 is a deficient number, since it is larger than the sum of its proper divisors (5825305623).

9406618665 is a wasteful number, since it uses less digits than its factorization.

9406618665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555608.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 9406618665 is about 96987.7243005526. The cubic root of 9406618665 is about 2110.9495112565.

The spelling of 9406618665 in words is "nine billion, four hundred six million, six hundred eighteen thousand, six hundred sixty-five".