2990769665 has 16 divisors (see below), whose sum is σ = 3878210448. Its totient is φ = 2201016576.

The previous prime is 2990769643. The next prime is 2990769673. The reversal of 2990769665 is 5669670992.

It can be written as a sum of positive squares in 8 ways, for example, as 12666481 + 2978103184 = 3559^2 + 54572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2990769665 - 2⁸ = 2990769409 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 59474 + ... + 97563.

It is an arithmetic number, because the mean of its divisors is an integer number (242388153).

Almost surely, 2^2990769665 is an apocalyptic number.

It is an amenable number.

2990769665 is a deficient number, since it is larger than the sum of its proper divisors (887440783).

2990769665 is a wasteful number, since it uses less digits than its factorization.

2990769665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157348.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The square root of 2990769665 is about 54687.9297925968. The cubic root of 2990769665 is about 1440.7688899494.

The spelling of 2990769665 in words is "two billion, nine hundred ninety million, seven hundred sixty-nine thousand, six hundred sixty-five".