997162756 has 12 divisors (see below), whose sum is σ = 1746214092. Its totient is φ = 498244448.

The previous prime is 997162753. The next prime is 997162757. The reversal of 997162756 is 657261799.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 597802500 + 399360256 = 24450^2 + 19984^2 .

It is not an unprimeable number, because it can be changed into a prime (997162753) 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, 77515 + ... + 89458.

It is an arithmetic number, because the mean of its divisors is an integer number (145517841).

Almost surely, 2^997162756 is an apocalyptic number.

It is an amenable number.

997162756 is a deficient number, since it is larger than the sum of its proper divisors (749051336).

997162756 is a wasteful number, since it uses less digits than its factorization.

997162756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168470 (or 168468 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 52.

The square root of 997162756 is about 31577.8839696393. The cubic root of 997162756 is about 999.0533561482.

It can be divided in two parts, 9971 and 62756, that added together give a palindrome (72727).

The spelling of 997162756 in words is "nine hundred ninety-seven million, one hundred sixty-two thousand, seven hundred fifty-six".