897878 has 4 divisors (see below), whose sum is σ = 1346820. Its totient is φ = 448938.

The previous prime is 897877. The next prime is 897881. The reversal of 897878 is 878798.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224468 + ... + 224471.

It is an arithmetic number, because the mean of its divisors is an integer number (336705).

2⁸⁹⁷⁸⁷⁸ is an apocalyptic number.

897878 is a deficient number, since it is larger than the sum of its proper divisors (448942).

897878 is a wasteful number, since it uses less digits than its factorization.

897878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448941.

The product of its digits is 225792, while the sum is 47.

The square root of 897878 is about 947.5642458430. The cubic root of 897878 is about 96.4729984322.

The spelling of 897878 in words is "eight hundred ninety-seven thousand, eight hundred seventy-eight".