997356683 has 4 divisors (see below), whose sum is σ = 1049849160. Its totient is φ = 944864208.

The previous prime is 997356677. The next prime is 997356691. The reversal of 997356683 is 386653799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386653799 = 7 ⋅55236257.

It is a cyclic number.

It is not a de Polignac number, because 997356683 - 2⁸ = 997356427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997356653) 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 in 3 ways as a sum of consecutive naturals, for example, 26246210 + ... + 26246247.

It is an arithmetic number, because the mean of its divisors is an integer number (262462290).

Almost surely, 2^997356683 is an apocalyptic number.

997356683 is a deficient number, since it is larger than the sum of its proper divisors (52492477).

997356683 is a wasteful number, since it uses less digits than its factorization.

997356683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52492476.

The product of its digits is 7348320, while the sum is 56.

The square root of 997356683 is about 31580.9544345955. The cubic root of 997356683 is about 999.1181168441.

The spelling of 997356683 in words is "nine hundred ninety-seven million, three hundred fifty-six thousand, six hundred eighty-three".