6413065681 has 4 divisors (see below), whose sum is σ = 6996071664. Its totient is φ = 5830059700.

The previous prime is 6413065639. The next prime is 6413065693. The reversal of 6413065681 is 1865603146.

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 6413065681 - 2¹³ = 6413057489 is a prime.

It is a super-2 number, since 2×6413065681² = 82254822857639987522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6413063681) 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, 291502975 + ... + 291502996.

It is an arithmetic number, because the mean of its divisors is an integer number (1749017916).

Almost surely, 2^6413065681 is an apocalyptic number.

It is an amenable number.

6413065681 is a deficient number, since it is larger than the sum of its proper divisors (583005983).

6413065681 is a wasteful number, since it uses less digits than its factorization.

6413065681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583005982.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 6413065681 is about 80081.6188709994. The cubic root of 6413065681 is about 1857.8981229502.

The spelling of 6413065681 in words is "six billion, four hundred thirteen million, sixty-five thousand, six hundred eighty-one".