6621102 has 40 divisors (see below), whose sum is σ = 15489936. Its totient is φ = 2109888.

The previous prime is 6621071. The next prime is 6621103. The reversal of 6621102 is 2011266.

It is a happy number.

6621102 is a `hidden beast` number, since 662 + 1 + 1 + 0 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621103) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2838 + ... + 4614.

Almost surely, 2^6621102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6621102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7744968).

6621102 is an abundant number, since it is smaller than the sum of its proper divisors (8868834).

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

6621102 is a wasteful number, since it uses less digits than its factorization.

6621102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 1805 counting only the distinct ones).

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

The square root of 6621102 is about 2573.1502093737. The cubic root of 6621102 is about 187.7774452595. Note that the first 3 decimals are identical.

Adding to 6621102 its reverse (2011266), we get a palindrome (8632368).

It can be divided in two parts, 662 and 1102, that added together give a square (1764 = 42²).

The spelling of 6621102 in words is "six million, six hundred twenty-one thousand, one hundred two".