897780 has 48 divisors (see below), whose sum is σ = 2709504. Its totient is φ = 220800.

The previous prime is 897779. The next prime is 897781. The reversal of 897780 is 87798.

It is an interprime number because it is at equal distance from previous prime (897779) and next prime (897781).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2⁸⁹⁷⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354752).

897780 is an abundant number, since it is smaller than the sum of its proper divisors (1811724).

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

897780 is a wasteful number, since it uses less digits than its factorization.

897780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 897780 is about 947.5125328986. The cubic root of 897780 is about 96.4694884164.

The spelling of 897780 in words is "eight hundred ninety-seven thousand, seven hundred eighty".