160997797 has 2 divisors, whose sum is σ = 160997798. Its totient is φ = 160997796.

The previous prime is 160997789. The next prime is 160997819. The reversal of 160997797 is 797799061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160554241 + 443556 = 12671^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 160997797 - 2³ = 160997789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160997747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80498898 + 80498899.

It is an arithmetic number, because the mean of its divisors is an integer number (80498899).

Almost surely, 2^160997797 is an apocalyptic number.

It is an amenable number.

160997797 is a deficient number, since it is larger than the sum of its proper divisors (1).

160997797 is an equidigital number, since it uses as much as digits as its factorization.

160997797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The square root of 160997797 is about 12688.4907297913. The cubic root of 160997797 is about 544.0097012489.

The spelling of 160997797 in words is "one hundred sixty million, nine hundred ninety-seven thousand, seven hundred ninety-seven".