2667680729 has 8 divisors (see below), whose sum is σ = 3068198208. Its totient is φ = 2272018320.

The previous prime is 2667680713. The next prime is 2667680773. The reversal of 2667680729 is 9270867662.

2667680729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2667680729 - 2⁴ = 2667680713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2667650729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212587 + ... + 1214784.

It is an arithmetic number, because the mean of its divisors is an integer number (383524776).

Almost surely, 2^2667680729 is an apocalyptic number.

It is an amenable number.

2667680729 is a deficient number, since it is larger than the sum of its proper divisors (400517479).

2667680729 is a wasteful number, since it uses less digits than its factorization.

2667680729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427535.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 2667680729 is about 51649.5956324926. The cubic root of 2667680729 is about 1386.8983043127.

The spelling of 2667680729 in words is "two billion, six hundred sixty-seven million, six hundred eighty thousand, seven hundred twenty-nine".