6620980 has 48 divisors (see below), whose sum is σ = 14676480. Its totient is φ = 2505600.

The previous prime is 6620953. The next prime is 6620981. The reversal of 6620980 is 890266.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36490 + ... + 36670.

It is an arithmetic number, because the mean of its divisors is an integer number (305760).

Almost surely, 2^6620980 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 6620980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7338240).

6620980 is an abundant number, since it is smaller than the sum of its proper divisors (8055500).

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

6620980 is a wasteful number, since it uses less digits than its factorization.

6620980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6620980 is about 2573.1265029143. The cubic root of 6620980 is about 187.7762919274.

The spelling of 6620980 in words is "six million, six hundred twenty thousand, nine hundred eighty".