6620735 has 32 divisors (see below), whose sum is σ = 9398592. Its totient is φ = 4423680.

The previous prime is 6620717. The next prime is 6620741. The reversal of 6620735 is 5370266.

It is not a de Polignac number, because 6620735 - 2¹⁸ = 6358591 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6620698 and 6620707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68207 + ... + 68303.

It is an arithmetic number, because the mean of its divisors is an integer number (293706).

Almost surely, 2^6620735 is an apocalyptic number.

6620735 is a deficient number, since it is larger than the sum of its proper divisors (2777857).

6620735 is a wasteful number, since it uses less digits than its factorization.

6620735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 6620735 is about 2573.0788950205. The cubic root of 6620735 is about 187.7739757668.

The spelling of 6620735 in words is "six million, six hundred twenty thousand, seven hundred thirty-five".