997353727 has 2 divisors, whose sum is σ = 997353728. Its totient is φ = 997353726.

The previous prime is 997353593. The next prime is 997353737. The reversal of 997353727 is 727353799.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (727353799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997353727 - 2¹¹ = 997351679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997353737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498676863 + 498676864.

It is an arithmetic number, because the mean of its divisors is an integer number (498676864).

Almost surely, 2^997353727 is an apocalyptic number.

997353727 is a deficient number, since it is larger than the sum of its proper divisors (1).

997353727 is an equidigital number, since it uses as much as digits as its factorization.

997353727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2500470, while the sum is 52.

The square root of 997353727 is about 31580.9076342020. The cubic root of 997353727 is about 999.1171297695.

The spelling of 997353727 in words is "nine hundred ninety-seven million, three hundred fifty-three thousand, seven hundred twenty-seven".