6620884 has 12 divisors (see below), whose sum is σ = 11610900. Its totient is φ = 3303488.

The previous prime is 6620869. The next prime is 6620899. The reversal of 6620884 is 4880266.

It is an interprime number because it is at equal distance from previous prime (6620869) and next prime (6620899).

It can be written as a sum of positive squares in 2 ways, for example, as 3459600 + 3161284 = 1860^2 + 1778^2 .

It is a super-2 number, since 2×6620884² = 87672209882912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822 + ... + 3730.

It is an arithmetic number, because the mean of its divisors is an integer number (967575).

Almost surely, 2^6620884 is an apocalyptic number.

It is an amenable number.

6620884 is a deficient number, since it is larger than the sum of its proper divisors (4990016).

6620884 is a wasteful number, since it uses less digits than its factorization.

6620884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 6620884 is about 2573.1078484976. The cubic root of 6620884 is about 187.7753843774.

The spelling of 6620884 in words is "six million, six hundred twenty thousand, eight hundred eighty-four".