163077997 has 4 divisors (see below), whose sum is σ = 164251360. Its totient is φ = 161904636.

The previous prime is 163077989. The next prime is 163078009. The reversal of 163077997 is 799770361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163077997 - 2³ = 163077989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163077997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163077917) 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, 586473 + ... + 586750.

It is an arithmetic number, because the mean of its divisors is an integer number (41062840).

Almost surely, 2^163077997 is an apocalyptic number.

It is an amenable number.

163077997 is a deficient number, since it is larger than the sum of its proper divisors (1173363).

163077997 is a wasteful number, since it uses less digits than its factorization.

163077997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173362.

The product of its (nonzero) digits is 500094, while the sum is 49.

The square root of 163077997 is about 12770.1995677436. The cubic root of 163077997 is about 546.3426726714.

The spelling of 163077997 in words is "one hundred sixty-three million, seventy-seven thousand, nine hundred ninety-seven".