897663 has 8 divisors (see below), whose sum is σ = 1289008. Its totient is φ = 552384.

The previous prime is 897649. The next prime is 897671. The reversal of 897663 is 366798.

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

It is not a de Polignac number, because 897663 - 2⁴ = 897647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 23017 = 897663 / (8 + 9 + 7 + 6 + 6 + 3).

It is a Duffinian number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897163) 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, 11470 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (161126).

2⁸⁹⁷⁶⁶³ is an apocalyptic number.

897663 is a deficient number, since it is larger than the sum of its proper divisors (391345).

897663 is a wasteful number, since it uses less digits than its factorization.

897663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23033.

The product of its digits is 54432, while the sum is 39.

The square root of 897663 is about 947.4507902788. The cubic root of 897663 is about 96.4652975528.

The spelling of 897663 in words is "eight hundred ninety-seven thousand, six hundred sixty-three".