6610720163 has 4 divisors (see below), whose sum is σ = 6638380320. Its totient is φ = 6583060008.

The previous prime is 6610720159. The next prime is 6610720169. The reversal of 6610720163 is 3610270166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3610270166 = 2 ⋅1805135083.

It is a cyclic number.

It is not a de Polignac number, because 6610720163 - 2² = 6610720159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6610720169) 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, 13829720 + ... + 13830197.

It is an arithmetic number, because the mean of its divisors is an integer number (1659595080).

Almost surely, 2^6610720163 is an apocalyptic number.

6610720163 is a deficient number, since it is larger than the sum of its proper divisors (27660157).

6610720163 is a wasteful number, since it uses less digits than its factorization.

6610720163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27660156.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 6610720163 is about 81306.3353189652. The cubic root of 6610720163 is about 1876.7924938830.

The spelling of 6610720163 in words is "six billion, six hundred ten million, seven hundred twenty thousand, one hundred sixty-three".