997507597 has 2 divisors, whose sum is σ = 997507598. Its totient is φ = 997507596.

The previous prime is 997507571. The next prime is 997507601. The reversal of 997507597 is 795705799.

It is a happy number.

997507597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903242916 + 94264681 = 30054^2 + 9709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997507597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997507097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498753798 + 498753799.

It is an arithmetic number, because the mean of its divisors is an integer number (498753799).

Almost surely, 2^997507597 is an apocalyptic number.

It is an amenable number.

997507597 is a deficient number, since it is larger than the sum of its proper divisors (1).

997507597 is an equidigital number, since it uses as much as digits as its factorization.

997507597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6251175, while the sum is 58.

The square root of 997507597 is about 31583.3436640265. The cubic root of 997507597 is about 999.1685078124.

The spelling of 997507597 in words is "nine hundred ninety-seven million, five hundred seven thousand, five hundred ninety-seven".