997002871 has 2 divisors, whose sum is σ = 997002872. Its totient is φ = 997002870.

The previous prime is 997002857. The next prime is 997002901. The reversal of 997002871 is 178200799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997002871 - 2¹⁹ = 996478583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997012871) 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 as a sum of consecutive naturals, namely, 498501435 + 498501436.

It is an arithmetic number, because the mean of its divisors is an integer number (498501436).

Almost surely, 2^997002871 is an apocalyptic number.

997002871 is a deficient number, since it is larger than the sum of its proper divisors (1).

997002871 is an equidigital number, since it uses as much as digits as its factorization.

997002871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 997002871 is about 31575.3522704023. The cubic root of 997002871 is about 998.9999572479. Note that the first 4 decimals are identical.

The spelling of 997002871 in words is "nine hundred ninety-seven million, two thousand, eight hundred seventy-one".