486644621 has 8 divisors (see below), whose sum is σ = 515705400. Its totient is φ = 458402560.

The previous prime is 486644597. The next prime is 486644623. The reversal of 486644621 is 126446684.

It can be written as a sum of positive squares in 4 ways, for example, as 16362025 + 470282596 = 4045^2 + 21686^2 .

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-486644621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (486644623) 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, 203456 + ... + 205833.

It is an arithmetic number, because the mean of its divisors is an integer number (64463175).

Almost surely, 2^486644621 is an apocalyptic number.

486644621 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

486644621 is a deficient number, since it is larger than the sum of its proper divisors (29060779).

486644621 is a wasteful number, since it uses less digits than its factorization.

486644621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409359.

The product of its digits is 221184, while the sum is 41.

The square root of 486644621 is about 22060.0231414203. The cubic root of 486644621 is about 786.5698747577.

The spelling of 486644621 in words is "four hundred eighty-six million, six hundred forty-four thousand, six hundred twenty-one".