2490776665 has 16 divisors (see below), whose sum is σ = 3220163856. Its totient is φ = 1838592000.

The previous prime is 2490776611. The next prime is 2490776681. The reversal of 2490776665 is 5666770942.

2490776665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1565001 + 2489211664 = 1251^2 + 49892^2 .

It is not a de Polignac number, because 2490776665 - 2⁷ = 2490776537 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, 191365 + ... + 203965.

It is an arithmetic number, because the mean of its divisors is an integer number (201260241).

Almost surely, 2^2490776665 is an apocalyptic number.

It is an amenable number.

2490776665 is a deficient number, since it is larger than the sum of its proper divisors (729387191).

2490776665 is a wasteful number, since it uses less digits than its factorization.

2490776665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The square root of 2490776665 is about 49907.6814228030. The cubic root of 2490776665 is about 1355.5376859661.

The spelling of 2490776665 in words is "two billion, four hundred ninety million, seven hundred seventy-six thousand, six hundred sixty-five".