486656813 has 4 divisors (see below), whose sum is σ = 487059228. Its totient is φ = 486254400.

The previous prime is 486656809. The next prime is 486656881. The reversal of 486656813 is 318656684.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139877929 + 346778884 = 11827^2 + 18622^2 .

It is a cyclic number.

It is not a de Polignac number, because 486656813 - 2² = 486656809 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 (486656113) 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, 199388 + ... + 201813.

It is an arithmetic number, because the mean of its divisors is an integer number (121764807).

Almost surely, 2^486656813 is an apocalyptic number.

It is an amenable number.

486656813 is a deficient number, since it is larger than the sum of its proper divisors (402415).

486656813 is a wasteful number, since it uses less digits than its factorization.

486656813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402414.

The product of its digits is 829440, while the sum is 47.

The square root of 486656813 is about 22060.2994766617. The cubic root of 486656813 is about 786.5764433976.

The spelling of 486656813 in words is "four hundred eighty-six million, six hundred fifty-six thousand, eight hundred thirteen".