897770 has 16 divisors (see below), whose sum is σ = 1711368. Its totient is φ = 337920.

The previous prime is 897751. The next prime is 897779. The reversal of 897770 is 77798.

897770 = 268² + 269² + ... + 279².

It can be written as a sum of positive squares in 4 ways, for example, as 674041 + 223729 = 821^2 + 473^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897770.

It is not an unprimeable number, because it can be changed into a prime (897779) by changing a digit.

897770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471 + ... + 2810.

2⁸⁹⁷⁷⁷⁰ is an apocalyptic number.

897770 is a deficient number, since it is larger than the sum of its proper divisors (813598).

897770 is a wasteful number, since it uses less digits than its factorization.

897770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 897770 is about 947.5072559089. The cubic root of 897770 is about 96.4691302371.

The spelling of 897770 in words is "eight hundred ninety-seven thousand, seven hundred seventy".