997333087 has 2 divisors, whose sum is σ = 997333088. Its totient is φ = 997333086.

The previous prime is 997333079. The next prime is 997333111. The reversal of 997333087 is 780333799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997333087 - 2³ = 997333079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997333087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997331087) 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, 498666543 + 498666544.

It is an arithmetic number, because the mean of its divisors is an integer number (498666544).

Almost surely, 2^997333087 is an apocalyptic number.

997333087 is a deficient number, since it is larger than the sum of its proper divisors (1).

997333087 is an equidigital number, since it uses as much as digits as its factorization.

997333087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 997333087 is about 31580.5808527962. The cubic root of 997333087 is about 999.1102375576.

It can be divided in two parts, 997 and 333087, that added together give a square (334084 = 578²).

The spelling of 997333087 in words is "nine hundred ninety-seven million, three hundred thirty-three thousand, eighty-seven".