9997577 has 2 divisors, whose sum is σ = 9997578. Its totient is φ = 9997576.

The previous prime is 9997573. The next prime is 9997579. The reversal of 9997577 is 7757999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 2468041 = 2744^2 + 1571^2 .

It is an emirp because it is prime and its reverse (7757999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9997577 - 2² = 9997573 is a prime.

Together with 9997579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9997573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998788 + 4998789.

It is an arithmetic number, because the mean of its divisors is an integer number (4998789).

Almost surely, 2^9997577 is an apocalyptic number.

It is an amenable number.

9997577 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997577 is an equidigital number, since it uses as much as digits as its factorization.

9997577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1250235, while the sum is 53.

The square root of 9997577 is about 3161.8945270202. The cubic root of 9997577 is about 215.4260669468.

The spelling of 9997577 in words is "nine million, nine hundred ninety-seven thousand, five hundred seventy-seven".