2660722726 has 4 divisors (see below), whose sum is σ = 3991084092. Its totient is φ = 1330361362.

The previous prime is 2660722697. The next prime is 2660722787. The reversal of 2660722726 is 6272270662.

2660722726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665180680 + ... + 665180683.

It is an arithmetic number, because the mean of its divisors is an integer number (997771023).

Almost surely, 2^2660722726 is an apocalyptic number.

2660722726 is a deficient number, since it is larger than the sum of its proper divisors (1330361366).

2660722726 is a wasteful number, since it uses less digits than its factorization.

2660722726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330361365.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 2660722726 is about 51582.1938850995. The cubic root of 2660722726 is about 1385.6914576596.

The spelling of 2660722726 in words is "two billion, six hundred sixty million, seven hundred twenty-two thousand, seven hundred twenty-six".