2665826057 has 4 divisors (see below), whose sum is σ = 2680719120. Its totient is φ = 2650932996.

The previous prime is 2665826021. The next prime is 2665826113. The reversal of 2665826057 is 7506285662.

2665826057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7506285662 = 2 ⋅3753142831.

It is a cyclic number.

It is not a de Polignac number, because 2665826057 - 2⁶ = 2665825993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665826857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7446263 + ... + 7446620.

It is an arithmetic number, because the mean of its divisors is an integer number (670179780).

Almost surely, 2^2665826057 is an apocalyptic number.

It is an amenable number.

2665826057 is a deficient number, since it is larger than the sum of its proper divisors (14893063).

2665826057 is a wasteful number, since it uses less digits than its factorization.

2665826057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14893062.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The square root of 2665826057 is about 51631.6381398073. The cubic root of 2665826057 is about 1386.5768218403.

The spelling of 2665826057 in words is "two billion, six hundred sixty-five million, eight hundred twenty-six thousand, fifty-seven".