2608741721 has 8 divisors (see below), whose sum is σ = 2736255360. Its totient is φ = 2484228528.

The previous prime is 2608741717. The next prime is 2608741741. The reversal of 2608741721 is 1271478062.

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 2608741721 - 2² = 2608741717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2608741741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748331 + ... + 751808.

It is an arithmetic number, because the mean of its divisors is an integer number (342031920).

Almost surely, 2^2608741721 is an apocalyptic number.

It is an amenable number.

2608741721 is a deficient number, since it is larger than the sum of its proper divisors (127513639).

2608741721 is a wasteful number, since it uses less digits than its factorization.

2608741721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500223.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 2608741721 is about 51075.8428320082. The cubic root of 2608741721 is about 1376.6082288380.

The spelling of 2608741721 in words is "two billion, six hundred eight million, seven hundred forty-one thousand, seven hundred twenty-one".