6620634 has 24 divisors (see below), whose sum is σ = 14488032. Its totient is φ = 2184840.

The previous prime is 6620629. The next prime is 6620681. The reversal of 6620634 is 4360266.

6620634 is a `hidden beast` number, since 6 + 6 + 20 + 634 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6620598 and 6620607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69 + ... + 3639.

It is an arithmetic number, because the mean of its divisors is an integer number (603668).

Almost surely, 2^6620634 is an apocalyptic number.

6620634 is an abundant number, since it is smaller than the sum of its proper divisors (7867398).

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

6620634 is a wasteful number, since it uses less digits than its factorization.

6620634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3679 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6620634 is about 2573.0592686528. The cubic root of 6620634 is about 187.7730209248.

The spelling of 6620634 in words is "six million, six hundred twenty thousand, six hundred thirty-four".