2660010641 has 4 divisors (see below), whose sum is σ = 2660119332. Its totient is φ = 2659901952.

The previous prime is 2660010631. The next prime is 2660010671. The reversal of 2660010641 is 1460100662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1805910016 + 854100625 = 42496^2 + 29225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660010641 - 2¹⁰ = 2660009617 is a prime.

It is a super-2 number, since 2×2660010641² = 14151313220466461762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660010641.

It is not an unprimeable number, because it can be changed into a prime (2660010611) 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, 1481 + ... + 72953.

It is an arithmetic number, because the mean of its divisors is an integer number (665029833).

Almost surely, 2^2660010641 is an apocalyptic number.

It is an amenable number.

2660010641 is a deficient number, since it is larger than the sum of its proper divisors (108691).

2660010641 is an equidigital number, since it uses as much as digits as its factorization.

2660010641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108690.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2660010641 is about 51575.2909928776. The cubic root of 2660010641 is about 1385.5678298283.

The spelling of 2660010641 in words is "two billion, six hundred sixty million, ten thousand, six hundred forty-one".