8169997 has 8 divisors (see below), whose sum is σ = 8933760. Its totient is φ = 7409760.

The previous prime is 8169989. The next prime is 8170009. The reversal of 8169997 is 7999618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8169997 - 2³ = 8169989 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8169997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8169937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7393 + ... + 8425.

It is an arithmetic number, because the mean of its divisors is an integer number (1116720).

Almost surely, 2^8169997 is an apocalyptic number.

It is an amenable number.

8169997 is a deficient number, since it is larger than the sum of its proper divisors (763763).

8169997 is a wasteful number, since it uses less digits than its factorization.

8169997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763.

The product of its digits is 244944, while the sum is 49.

The square root of 8169997 is about 2858.3206608077. The cubic root of 8169997 is about 201.4067241054.

It can be divided in two parts, 81699 and 97, that added together give a square (81796 = 286²).

The spelling of 8169997 in words is "eight million, one hundred sixty-nine thousand, nine hundred ninety-seven".