6221016 has 64 divisors (see below), whose sum is σ = 17539200. Its totient is φ = 2042784.

The previous prime is 6221009. The next prime is 6221023. The reversal of 6221016 is 6101226.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6221009) and next prime (6221023).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 6221016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17755 + ... + 18101.

It is an arithmetic number, because the mean of its divisors is an integer number (274050).

Almost surely, 2^6221016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6221016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8769600).

6221016 is an abundant number, since it is smaller than the sum of its proper divisors (11318184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6221016 is a wasteful number, since it uses less digits than its factorization.

6221016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 6221016 is about 2494.1964637935. The cubic root of 6221016 is about 183.9163923871.

It can be divided in two parts, 62210 and 16, that added together give a palindrome (62226).

The spelling of 6221016 in words is "six million, two hundred twenty-one thousand, sixteen".