897145 has 4 divisors (see below), whose sum is σ = 1076580. Its totient is φ = 717712.

The previous prime is 897137. The next prime is 897157. The reversal of 897145 is 541798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541798 = 2 ⋅270899.

It can be written as a sum of positive squares in 2 ways, for example, as 423801 + 473344 = 651^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 897145 - 2³ = 897137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897145.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 89710 + ... + 89719.

It is an arithmetic number, because the mean of its divisors is an integer number (269145).

2⁸⁹⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

897145 is a deficient number, since it is larger than the sum of its proper divisors (179435).

897145 is a wasteful number, since it uses less digits than its factorization.

897145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179434.

The product of its digits is 10080, while the sum is 34.

The square root of 897145 is about 947.1773857098. The cubic root of 897145 is about 96.4467387548.

The spelling of 897145 in words is "eight hundred ninety-seven thousand, one hundred forty-five".