6630161 has 4 divisors (see below), whose sum is σ = 6678000. Its totient is φ = 6582324.

The previous prime is 6630157. The next prime is 6630163. The reversal of 6630161 is 1610366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6630161 - 2² = 6630157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6630163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23711 + ... + 23988.

It is an arithmetic number, because the mean of its divisors is an integer number (1669500).

Almost surely, 2^6630161 is an apocalyptic number.

It is an amenable number.

6630161 is a deficient number, since it is larger than the sum of its proper divisors (47839).

6630161 is a wasteful number, since it uses less digits than its factorization.

6630161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47838.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 6630161 is about 2574.9099013364. The cubic root of 6630161 is about 187.8630453435.

The spelling of 6630161 in words is "six million, six hundred thirty thousand, one hundred sixty-one".