6620874 has 32 divisors (see below), whose sum is σ = 14757120. Its totient is φ = 1966272.

The previous prime is 6620869. The next prime is 6620899. The reversal of 6620874 is 4780266.

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, 799 + ... + 3725.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^6620874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6620874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7378560).

6620874 is an abundant number, since it is smaller than the sum of its proper divisors (8136246).

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

6620874 is a wasteful number, since it uses less digits than its factorization.

6620874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 6620874 is about 2573.1059053214. The cubic root of 6620874 is about 187.7752898404.

The spelling of 6620874 in words is "six million, six hundred twenty thousand, eight hundred seventy-four".