6620635 has 24 divisors (see below), whose sum is σ = 9414576. Its totient is φ = 4455360.

The previous prime is 6620629. The next prime is 6620681. The reversal of 6620635 is 5360266.

It is not a de Polignac number, because 6620635 - 2⁷ = 6620507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14724 + ... + 15166.

It is an arithmetic number, because the mean of its divisors is an integer number (392274).

Almost surely, 2^6620635 is an apocalyptic number.

6620635 is a deficient number, since it is larger than the sum of its proper divisors (2793941).

6620635 is a wasteful number, since it uses less digits than its factorization.

6620635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 6620635 is about 2573.0594629740. The cubic root of 6620635 is about 187.7730303787.

The spelling of 6620635 in words is "six million, six hundred twenty thousand, six hundred thirty-five".