6620029 has 8 divisors (see below), whose sum is σ = 7162232. Its totient is φ = 6082560.

The previous prime is 6620027. The next prime is 6620039. The reversal of 6620029 is 9200266.

It can be written as a sum of positive squares in 4 ways, for example, as 15129 + 6604900 = 123^2 + 2570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6620029 - 2¹ = 6620027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6619985 and 6620012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (895279).

Almost surely, 2^6620029 is an apocalyptic number.

It is an amenable number.

6620029 is a deficient number, since it is larger than the sum of its proper divisors (542203).

6620029 is a wasteful number, since it uses less digits than its factorization.

6620029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6620029 is about 2572.9417016326. The cubic root of 6620029 is about 187.7673011232.

The spelling of 6620029 in words is "six million, six hundred twenty thousand, twenty-nine".