6620159 has 16 divisors (see below), whose sum is σ = 8504832. Its totient is φ = 5008608.

The previous prime is 6620101. The next prime is 6620171. The reversal of 6620159 is 9510266.

It is a cyclic number.

It is not a de Polignac number, because 6620159 - 2¹⁶ = 6554623 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512 + ... + 3674.

It is an arithmetic number, because the mean of its divisors is an integer number (531552).

Almost surely, 2^6620159 is an apocalyptic number.

6620159 is a deficient number, since it is larger than the sum of its proper divisors (1884673).

6620159 is a wasteful number, since it uses less digits than its factorization.

6620159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 6620159 is about 2572.9669644206. The cubic root of 6620159 is about 187.7685302009.

The spelling of 6620159 in words is "six million, six hundred twenty thousand, one hundred fifty-nine".