2722856761 has 3 divisors (see below), whose sum is σ = 2722908943. Its totient is φ = 2722804580.

The previous prime is 2722856737. The next prime is 2722856767. The reversal of 2722856761 is 1676582272.

The square root of 2722856761 is 52181.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 264680361 + 2458176400 = 16269^2 + 49580^2 .

It is not a de Polignac number, because 2722856761 - 2⁵ = 2722856729 is a prime.

It is a super-2 number, since 2×2722856761² = 14827897881846822242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722856767) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26091 + ... + 78271.

Almost surely, 2^2722856761 is an apocalyptic number.

2722856761 is the 52181-st square number.

2722856761 is the 26091-st centered octagonal number.

It is an amenable number.

2722856761 is a deficient number, since it is larger than the sum of its proper divisors (52182).

2722856761 is an frugal number, since it uses more digits than its factorization.

2722856761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104362 (or 52181 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The cubic root of 2722856761 is about 1396.3949358171.

The spelling of 2722856761 in words is "two billion, seven hundred twenty-two million, eight hundred fifty-six thousand, seven hundred sixty-one".