2667681064 has 8 divisors (see below), whose sum is σ = 5001902010. Its totient is φ = 1333840528.

The previous prime is 2667681017. The next prime is 2667681103. The reversal of 2667681064 is 4601867662.

It can be written as a sum of positive squares in only one way, i.e., 2475858564 + 191822500 = 49758^2 + 13850^2 .

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

It is an unprimeable number.

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, 166730059 + ... + 166730074.

Almost surely, 2^2667681064 is an apocalyptic number.

It is an amenable number.

2667681064 is a deficient number, since it is larger than the sum of its proper divisors (2334220946).

2667681064 is a wasteful number, since it uses less digits than its factorization.

2667681064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333460139 (or 333460135 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 2667681064 is about 51649.5988754995. The cubic root of 2667681064 is about 1386.8983623670.

The spelling of 2667681064 in words is "two billion, six hundred sixty-seven million, six hundred eighty-one thousand, sixty-four".