6651020 has 24 divisors (see below), whose sum is σ = 14309568. Its totient is φ = 2595200.

The previous prime is 6650993. The next prime is 6651049. The reversal of 6651020 is 201566.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6650983 and 6651001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236 + ... + 4875.

It is an arithmetic number, because the mean of its divisors is an integer number (596232).

Almost surely, 2^6651020 is an apocalyptic number.

It is an amenable number.

6651020 is an abundant number, since it is smaller than the sum of its proper divisors (7658548).

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

6651020 is a wasteful number, since it uses less digits than its factorization.

6651020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8161 (or 8159 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 6651020 is about 2578.9571535797. The cubic root of 6651020 is about 188.0598496638.

Adding to 6651020 its reverse (201566), we get a palindrome (6852586).

The spelling of 6651020 in words is "six million, six hundred fifty-one thousand, twenty".