6245622661 has 8 divisors (see below), whose sum is σ = 6419784600. Its totient is φ = 6073546752.

The previous prime is 6245622631. The next prime is 6245622689. The reversal of 6245622661 is 1662265426.

It can be written as a sum of positive squares in 4 ways, for example, as 814817025 + 5430805636 = 28545^2 + 73694^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6245622661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6245622631) 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, 515436 + ... + 527413.

It is an arithmetic number, because the mean of its divisors is an integer number (802473075).

Almost surely, 2^6245622661 is an apocalyptic number.

It is an amenable number.

6245622661 is a deficient number, since it is larger than the sum of its proper divisors (174161939).

6245622661 is a wasteful number, since it uses less digits than its factorization.

6245622661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043015.

The product of its digits is 207360, while the sum is 40.

The square root of 6245622661 is about 79029.2519324332. The cubic root of 6245622661 is about 1841.5856154262.

The spelling of 6245622661 in words is "six billion, two hundred forty-five million, six hundred twenty-two thousand, six hundred sixty-one".