6620329 has 9 divisors (see below), whose sum is σ = 6924189. Its totient is φ = 6329580.

The previous prime is 6620309. The next prime is 6620351. The reversal of 6620329 is 9230266.

The square root of 6620329 is 2573.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6620329 - 2¹¹ = 6618281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6620297 and 6620306.

It is not an unprimeable number, because it can be changed into a prime (6620309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 79722 + ... + 79804.

Almost surely, 2^6620329 is an apocalyptic number.

6620329 is the 2573-rd square number.

6620329 is the 1287-th centered octagonal number.

It is an amenable number.

6620329 is a deficient number, since it is larger than the sum of its proper divisors (303860).

6620329 is an frugal number, since it uses more digits than its factorization.

6620329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The cubic root of 6620329 is about 187.7701374320.

The spelling of 6620329 in words is "six million, six hundred twenty thousand, three hundred twenty-nine".