2672605261 has 8 divisors (see below), whose sum is σ = 2720337048. Its totient is φ = 2625000000.

The previous prime is 2672605253. The next prime is 2672605279. The reversal of 2672605261 is 1625062762.

It can be written as a sum of positive squares in 4 ways, for example, as 1062108100 + 1610497161 = 32590^2 + 40131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2672605261 - 2³ = 2672605253 is a prime.

It is a super-2 number, since 2×2672605261² = 14285637762249756242, 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 2672605261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2672605231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11511 + ... + 74011.

It is an arithmetic number, because the mean of its divisors is an integer number (340042131).

Almost surely, 2^2672605261 is an apocalyptic number.

It is an amenable number.

2672605261 is a deficient number, since it is larger than the sum of its proper divisors (47731787).

2672605261 is an equidigital number, since it uses as much as digits as its factorization.

2672605261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63263.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 2672605261 is about 51697.2461645686. The cubic root of 2672605261 is about 1387.7511833320.

The spelling of 2672605261 in words is "two billion, six hundred seventy-two million, six hundred five thousand, two hundred sixty-one".