907997 has 2 divisors, whose sum is σ = 907998. Its totient is φ = 907996.

The previous prime is 907969. The next prime is 907999. The reversal of 907997 is 799709.

907997 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900601 + 7396 = 949^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 907997 - 2¹⁰ = 906973 is a prime.

Together with 907999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (907999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453998 + 453999.

It is an arithmetic number, because the mean of its divisors is an integer number (453999).

2⁹⁰⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

907997 is a deficient number, since it is larger than the sum of its proper divisors (1).

907997 is an equidigital number, since it uses as much as digits as its factorization.

907997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 907997 is about 952.8887658064. Note that the first 3 decimals coincide. The cubic root of 907997 is about 96.8340592872.

The spelling of 907997 in words is "nine hundred seven thousand, nine hundred ninety-seven".