6220981 has 8 divisors (see below), whose sum is σ = 6826680. Its totient is φ = 5633472.

The previous prime is 6220979. The next prime is 6221003. The reversal of 6220981 is 1890226.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2480625 + 3740356 = 1575^2 + 1934^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6220981 - 2¹ = 6220979 is a prime.

It is a super-2 number, since 2×6220981² = 77401209204722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221981) 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, 3826 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (853335).

Almost surely, 2^6220981 is an apocalyptic number.

It is an amenable number.

6220981 is a deficient number, since it is larger than the sum of its proper divisors (605699).

6220981 is a wasteful number, since it uses less digits than its factorization.

6220981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 6220981 is about 2494.1894474959. The cubic root of 6220981 is about 183.9160474764.

The spelling of 6220981 in words is "six million, two hundred twenty thousand, nine hundred eighty-one".