822487945 has 8 divisors (see below), whose sum is σ = 996758280. Its totient is φ = 651475200.

The previous prime is 822487943. The next prime is 822487997. The reversal of 822487945 is 549784228.

It can be written as a sum of positive squares in 4 ways, for example, as 103550976 + 718936969 = 10176^2 + 26813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 822487945 - 2¹ = 822487943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822487943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813840 + ... + 814849.

It is an arithmetic number, because the mean of its divisors is an integer number (124594785).

Almost surely, 2^822487945 is an apocalyptic number.

It is an amenable number.

822487945 is a deficient number, since it is larger than the sum of its proper divisors (174270335).

822487945 is a wasteful number, since it uses less digits than its factorization.

822487945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628795.

The product of its digits is 1290240, while the sum is 49.

The square root of 822487945 is about 28679.0506293357. The cubic root of 822487945 is about 936.9358293307.

It can be divided in two parts, 8224 and 87945, that added together give a palindrome (96169).

The spelling of 822487945 in words is "eight hundred twenty-two million, four hundred eighty-seven thousand, nine hundred forty-five".