2762658721 has 3 divisors (see below), whose sum is σ = 2762711283. Its totient is φ = 2762606160.

The previous prime is 2762658683. The next prime is 2762658749. The reversal of 2762658721 is 1278562672.

The square root of 2762658721 is 52561.

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., 2370618721 + 392040000 = 48689^2 + 19800^2 .

It is not a de Polignac number, because 2762658721 - 2²⁵ = 2729104289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2762658751) 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, 26281 + ... + 78841.

It is an arithmetic number, because the mean of its divisors is an integer number (920903761).

Almost surely, 2^2762658721 is an apocalyptic number.

2762658721 is the 52561-st square number.

2762658721 is the 26281-st centered octagonal number.

It is an amenable number.

2762658721 is a deficient number, since it is larger than the sum of its proper divisors (52562).

2762658721 is an frugal number, since it uses more digits than its factorization.

2762658721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105122 (or 52561 counting only the distinct ones).

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

The cubic root of 2762658721 is about 1403.1660863996.

The spelling of 2762658721 in words is "two billion, seven hundred sixty-two million, six hundred fifty-eight thousand, seven hundred twenty-one".