897690 has 32 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 228800.

The previous prime is 897671. The next prime is 897691. The reversal of 897690 is 96798.

It is a super-2 number, since 2×897690² = 1611694672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (897691) by changing a digit.

897690 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 in 15 ways as a sum of consecutive naturals, for example, 40 + ... + 1340.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁸⁹⁷⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928).

897690 is an abundant number, since it is smaller than the sum of its proper divisors (1352166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897690 is a wasteful number, since it uses less digits than its factorization.

897690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 897690 is about 947.4650389328. The cubic root of 897690 is about 96.4662647075.

The spelling of 897690 in words is "eight hundred ninety-seven thousand, six hundred ninety".