864898 has 4 divisors (see below), whose sum is σ = 1297350. Its totient is φ = 432448.

The previous prime is 864887. The next prime is 864901. The reversal of 864898 is 898468.

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

It can be written as a sum of positive squares in only one way, i.e., 833569 + 31329 = 913^2 + 177^2 .

It is an unprimeable number.

864898 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 as a sum of consecutive naturals, namely, 216223 + ... + 216226.

2⁸⁶⁴⁸⁹⁸ is an apocalyptic number.

864898 is a deficient number, since it is larger than the sum of its proper divisors (432452).

864898 is a wasteful number, since it uses less digits than its factorization.

864898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432451.

The product of its digits is 110592, while the sum is 43.

The square root of 864898 is about 929.9989247306. The cubic root of 864898 is about 95.2770490572.

The spelling of 864898 in words is "eight hundred sixty-four thousand, eight hundred ninety-eight".