997470571 has 2 divisors, whose sum is σ = 997470572. Its totient is φ = 997470570.

The previous prime is 997470557. The next prime is 997470581. The reversal of 997470571 is 175074799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997470571 - 2⁷ = 997470443 is a prime.

It is a super-2 number, since 2×997470571² = 1989895080022132082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (997470541) 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, 498735285 + 498735286.

It is an arithmetic number, because the mean of its divisors is an integer number (498735286).

Almost surely, 2^997470571 is an apocalyptic number.

997470571 is a deficient number, since it is larger than the sum of its proper divisors (1).

997470571 is an equidigital number, since it uses as much as digits as its factorization.

997470571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 997470571 is about 31582.7574951903. The cubic root of 997470571 is about 999.1561451092.

The spelling of 997470571 in words is "nine hundred ninety-seven million, four hundred seventy thousand, five hundred seventy-one".