997235716 has 6 divisors (see below), whose sum is σ = 1745162510. Its totient is φ = 498617856.

The previous prime is 997235713. The next prime is 997235717. The reversal of 997235716 is 617532799.

It can be written as a sum of positive squares in only one way, i.e., 917847616 + 79388100 = 30296^2 + 8910^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 997235716.

It is not an unprimeable number, because it can be changed into a prime (997235713) 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 as a sum of consecutive naturals, namely, 124654461 + ... + 124654468.

Almost surely, 2^997235716 is an apocalyptic number.

It is an amenable number.

997235716 is a deficient number, since it is larger than the sum of its proper divisors (747926794).

997235716 is a wasteful number, since it uses less digits than its factorization.

997235716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249308933 (or 249308931 counting only the distinct ones).

The product of its digits is 714420, while the sum is 49.

The square root of 997235716 is about 31579.0391874104. The cubic root of 997235716 is about 999.0777216642.

The spelling of 997235716 in words is "nine hundred ninety-seven million, two hundred thirty-five thousand, seven hundred sixteen".