2660171967 has 12 divisors (see below), whose sum is σ = 3861978120. Its totient is φ = 1764444528.

The previous prime is 2660171959. The next prime is 2660171971. The reversal of 2660171967 is 7691710662.

It is a happy number.

2660171967 is a `hidden beast` number, since 26 + 601 + 7 + 19 + 6 + 7 = 666.

It is not a de Polignac number, because 2660171967 - 2³ = 2660171959 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660171957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 748417 + ... + 751962.

It is an arithmetic number, because the mean of its divisors is an integer number (321831510).

Almost surely, 2^2660171967 is an apocalyptic number.

2660171967 is a deficient number, since it is larger than the sum of its proper divisors (1201806153).

2660171967 is a wasteful number, since it uses less digits than its factorization.

2660171967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500582 (or 1500579 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 2660171967 is about 51576.8549545239. The cubic root of 2660171967 is about 1385.5958401921.

The spelling of 2660171967 in words is "two billion, six hundred sixty million, one hundred seventy-one thousand, nine hundred sixty-seven".