163246997 has 4 divisors (see below), whose sum is σ = 167659116. Its totient is φ = 158834880.

The previous prime is 163246991. The next prime is 163246999. The reversal of 163246997 is 799642361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799642361 = 7 ⋅114234623.

It can be written as a sum of positive squares in 2 ways, for example, as 85119076 + 78127921 = 9226^2 + 8839^2 .

It is a cyclic number.

It is not a de Polignac number, because 163246997 - 2⁴ = 163246981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163246991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2206004 + ... + 2206077.

It is an arithmetic number, because the mean of its divisors is an integer number (41914779).

Almost surely, 2^163246997 is an apocalyptic number.

It is an amenable number.

163246997 is a deficient number, since it is larger than the sum of its proper divisors (4412119).

163246997 is an equidigital number, since it uses as much as digits as its factorization.

163246997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412118.

The product of its digits is 489888, while the sum is 47.

The square root of 163246997 is about 12776.8148221691. The cubic root of 163246997 is about 546.5313350227.

The spelling of 163246997 in words is "one hundred sixty-three million, two hundred forty-six thousand, nine hundred ninety-seven".