761122289 has 4 divisors (see below), whose sum is σ = 761935524. Its totient is φ = 760309056.

The previous prime is 761122213. The next prime is 761122321. The reversal of 761122289 is 982221167.

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 414529600 + 346592689 = 20360^2 + 18617^2 .

It is a cyclic number.

It is not a de Polignac number, because 761122289 - 2²⁸ = 492686833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761122889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405212 + ... + 407085.

It is an arithmetic number, because the mean of its divisors is an integer number (190483881).

Almost surely, 2^761122289 is an apocalyptic number.

It is an amenable number.

761122289 is a deficient number, since it is larger than the sum of its proper divisors (813235).

761122289 is an equidigital number, since it uses as much as digits as its factorization.

761122289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813234.

The product of its digits is 24192, while the sum is 38.

The square root of 761122289 is about 27588.4448456233. Note that the first 3 decimals coincide. The cubic root of 761122289 is about 913.0295075013.

The spelling of 761122289 in words is "seven hundred sixty-one million, one hundred twenty-two thousand, two hundred eighty-nine".