2065176664 has 8 divisors (see below), whose sum is σ = 3872206260. Its totient is φ = 1032588328.

The previous prime is 2065176661. The next prime is 2065176679. The reversal of 2065176664 is 4666715602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2065176664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065176661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129073534 + ... + 129073549.

Almost surely, 2^2065176664 is an apocalyptic number.

It is an amenable number.

2065176664 is a deficient number, since it is larger than the sum of its proper divisors (1807029596).

2065176664 is a wasteful number, since it uses less digits than its factorization.

2065176664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258147089 (or 258147085 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 2065176664 is about 45444.2148573391. The cubic root of 2065176664 is about 1273.4612556319.

The spelling of 2065176664 in words is "two billion, sixty-five million, one hundred seventy-six thousand, six hundred sixty-four".