7279331761 has 9 divisors (see below), whose sum is σ = 7883554539. Its totient is φ = 6718359336.

The previous prime is 7279331749. The next prime is 7279331783. The reversal of 7279331761 is 1671339727.

The square root of 7279331761 is 85319.

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

It can be written as a sum of positive squares in only one way, i.e., 1076824225 + 6202507536 = 32815^2 + 78756^2 .

It is not a de Polignac number, because 7279331761 - 2¹¹ = 7279329713 is a prime.

It is a super-2 number, since 2×7279331761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7279331701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1105866 + ... + 1112428.

Almost surely, 2^7279331761 is an apocalyptic number.

7279331761 is the 85319-th square number.

7279331761 is the 42660-th centered octagonal number.

It is an amenable number.

7279331761 is a deficient number, since it is larger than the sum of its proper divisors (604222778).

7279331761 is an frugal number, since it uses more digits than its factorization.

7279331761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13152 (or 6576 counting only the distinct ones).

The product of its digits is 333396, while the sum is 46.

The cubic root of 7279331761 is about 1938.0449146513.

The spelling of 7279331761 in words is "seven billion, two hundred seventy-nine million, three hundred thirty-one thousand, seven hundred sixty-one".