6216481 has 4 divisors (see below), whose sum is σ = 6384532. Its totient is φ = 6048432.

The previous prime is 6216479. The next prime is 6216499. The reversal of 6216481 is 1846126.

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 5198400 + 1018081 = 2280^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216481 - 2¹ = 6216479 is a prime.

It is a super-2 number, since 2×6216481² = 77289272046722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6216421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83970 + ... + 84043.

It is an arithmetic number, because the mean of its divisors is an integer number (1596133).

Almost surely, 2^6216481 is an apocalyptic number.

6216481 is the 1440-th hex number.

It is an amenable number.

6216481 is a deficient number, since it is larger than the sum of its proper divisors (168051).

6216481 is a wasteful number, since it uses less digits than its factorization.

6216481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168050.

The product of its digits is 2304, while the sum is 28.

The square root of 6216481 is about 2493.2871876300. The cubic root of 6216481 is about 183.8716910290.

The spelling of 6216481 in words is "six million, two hundred sixteen thousand, four hundred eighty-one".