2635320561 has 8 divisors (see below), whose sum is σ = 3563250624. Its totient is φ = 1732135440.

The previous prime is 2635320553. The next prime is 2635320601. The reversal of 2635320561 is 1650235362.

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

It is not a de Polignac number, because 2635320561 - 2³ = 2635320553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2635320461) 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, 6185986 + ... + 6186411.

It is an arithmetic number, because the mean of its divisors is an integer number (445406328).

Almost surely, 2^2635320561 is an apocalyptic number.

It is an amenable number.

2635320561 is a deficient number, since it is larger than the sum of its proper divisors (927930063).

2635320561 is a wasteful number, since it uses less digits than its factorization.

2635320561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12372471.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 2635320561 is about 51335.3733891164. The cubic root of 2635320561 is about 1381.2675745708.

The spelling of 2635320561 in words is "two billion, six hundred thirty-five million, three hundred twenty thousand, five hundred sixty-one".