8681997 has 8 divisors (see below), whose sum is σ = 11602656. Its totient is φ = 5774672.

The previous prime is 8681989. The next prime is 8681999. The reversal of 8681997 is 7991868.

It is a happy number.

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 8681997 - 2³ = 8681989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681999) 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, 1698 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (1450332).

Almost surely, 2^8681997 is an apocalyptic number.

It is an amenable number.

8681997 is a deficient number, since it is larger than the sum of its proper divisors (2920659).

8681997 is a wasteful number, since it uses less digits than its factorization.

8681997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667.

The product of its digits is 217728, while the sum is 48.

The square root of 8681997 is about 2946.5228660236. The cubic root of 8681997 is about 205.5290479359.

The spelling of 8681997 in words is "eight million, six hundred eighty-one thousand, nine hundred ninety-seven".