897686 has 4 divisors (see below), whose sum is σ = 1346532. Its totient is φ = 448842.

The previous prime is 897671. The next prime is 897691. The reversal of 897686 is 686798.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

897686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224420 + ... + 224423.

It is an arithmetic number, because the mean of its divisors is an integer number (336633).

2⁸⁹⁷⁶⁸⁶ is an apocalyptic number.

897686 is a deficient number, since it is larger than the sum of its proper divisors (448846).

897686 is a wasteful number, since it uses less digits than its factorization.

897686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448845.

The product of its digits is 145152, while the sum is 44.

The square root of 897686 is about 947.4629280347. The cubic root of 897686 is about 96.4661214265.

The spelling of 897686 in words is "eight hundred ninety-seven thousand, six hundred eighty-six".