6245664161 has 4 divisors (see below), whose sum is σ = 6813451824. Its totient is φ = 5677876500.

The previous prime is 6245664149. The next prime is 6245664197. The reversal of 6245664161 is 1614665426.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6245664161 - 2³⁰ = 5171922337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6245663161) 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, 283893815 + ... + 283893836.

It is an arithmetic number, because the mean of its divisors is an integer number (1703362956).

Almost surely, 2^6245664161 is an apocalyptic number.

It is an amenable number.

6245664161 is a deficient number, since it is larger than the sum of its proper divisors (567787663).

6245664161 is a wasteful number, since it uses less digits than its factorization.

6245664161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567787662.

The product of its digits is 207360, while the sum is 41.

The square root of 6245664161 is about 79029.5144930044. The cubic root of 6245664161 is about 1841.5896943167.

The spelling of 6245664161 in words is "six billion, two hundred forty-five million, six hundred sixty-four thousand, one hundred sixty-one".