997357307 has 2 divisors, whose sum is σ = 997357308. Its totient is φ = 997357306.

The previous prime is 997357301. The next prime is 997357321. The reversal of 997357307 is 703753799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997357307 - 2¹² = 997353211 is a prime.

It is not a weakly prime, because it can be changed into another prime (997357301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498678653 + 498678654.

It is an arithmetic number, because the mean of its divisors is an integer number (498678654).

Almost surely, 2^997357307 is an apocalyptic number.

997357307 is a deficient number, since it is larger than the sum of its proper divisors (1).

997357307 is an equidigital number, since it uses as much as digits as its factorization.

997357307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1250235, while the sum is 50.

The square root of 997357307 is about 31580.9643139661. The cubic root of 997357307 is about 999.1183252114.

The spelling of 997357307 in words is "nine hundred ninety-seven million, three hundred fifty-seven thousand, three hundred seven".