7631289 has 12 divisors (see below), whose sum is σ = 11292372. Its totient is φ = 4963200.

The previous prime is 7631279. The next prime is 7631329. The reversal of 7631289 is 9821367.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 7112889 = 720^2 + 2667^2 .

It is not a de Polignac number, because 7631289 - 2¹⁷ = 7500217 is a prime.

It is a super-3 number, since 3×7631289³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7631209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9972 + ... + 10709.

It is an arithmetic number, because the mean of its divisors is an integer number (941031).

Almost surely, 2^7631289 is an apocalyptic number.

It is an amenable number.

7631289 is a deficient number, since it is larger than the sum of its proper divisors (3661083).

7631289 is a wasteful number, since it uses less digits than its factorization.

7631289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20728 (or 20725 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7631289 is about 2762.4787781990. The cubic root of 7631289 is about 196.8789571389.

The spelling of 7631289 in words is "seven million, six hundred thirty-one thousand, two hundred eighty-nine".