997337047 has 16 divisors (see below), whose sum is σ = 1155974400. Its totient is φ = 842784192.

The previous prime is 997336939. The next prime is 997337051. The reversal of 997337047 is 740733799.

It is a cyclic number.

It is not a de Polignac number, because 997337047 - 2¹⁵ = 997304279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997347047) 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 15 ways as a sum of consecutive naturals, for example, 325579 + ... + 328627.

It is an arithmetic number, because the mean of its divisors is an integer number (72248400).

Almost surely, 2^997337047 is an apocalyptic number.

997337047 is a deficient number, since it is larger than the sum of its proper divisors (158637353).

997337047 is a wasteful number, since it uses less digits than its factorization.

997337047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702.

The product of its (nonzero) digits is 1000188, while the sum is 49.

The square root of 997337047 is about 31580.6435494909. The cubic root of 997337047 is about 999.1115599080. Note that the first 3 decimals are identical.

The spelling of 997337047 in words is "nine hundred ninety-seven million, three hundred thirty-seven thousand, forty-seven".