2722723649 has 4 divisors (see below), whose sum is σ = 2722949460. Its totient is φ = 2722497840.

The previous prime is 2722723603. The next prime is 2722723687. The reversal of 2722723649 is 9463272272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1534680625 + 1188043024 = 39175^2 + 34468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2722723649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722722649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93734 + ... + 119295.

It is an arithmetic number, because the mean of its divisors is an integer number (680737365).

Almost surely, 2^2722723649 is an apocalyptic number.

It is an amenable number.

2722723649 is a deficient number, since it is larger than the sum of its proper divisors (225811).

2722723649 is a wasteful number, since it uses less digits than its factorization.

2722723649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225810.

The product of its digits is 508032, while the sum is 44.

The square root of 2722723649 is about 52179.7245009975. The cubic root of 2722723649 is about 1396.3721803109.

The spelling of 2722723649 in words is "two billion, seven hundred twenty-two million, seven hundred twenty-three thousand, six hundred forty-nine".