997563914 has 4 divisors (see below), whose sum is σ = 1496345874. Its totient is φ = 498781956.

The previous prime is 997563913. The next prime is 997563929. The reversal of 997563914 is 419365799.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 910047889 + 87516025 = 30167^2 + 9355^2 .

It is not an unprimeable number, because it can be changed into a prime (997563913) 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 as a sum of consecutive naturals, namely, 249390977 + ... + 249390980.

Almost surely, 2^997563914 is an apocalyptic number.

997563914 is a deficient number, since it is larger than the sum of its proper divisors (498781960).

997563914 is a wasteful number, since it uses less digits than its factorization.

997563914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498781959.

The product of its digits is 1837080, while the sum is 53.

The square root of 997563914 is about 31584.2352131566. The cubic root of 997563914 is about 999.1873110489.

The spelling of 997563914 in words is "nine hundred ninety-seven million, five hundred sixty-three thousand, nine hundred fourteen".