864274 has 4 divisors (see below), whose sum is σ = 1296414. Its totient is φ = 432136.

The previous prime is 864251. The next prime is 864277. The reversal of 864274 is 472468.

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., 855625 + 8649 = 925^2 + 93^2 .

It is not an unprimeable number, because it can be changed into a prime (864277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216067 + ... + 216070.

2⁸⁶⁴²⁷⁴ is an apocalyptic number.

864274 is a deficient number, since it is larger than the sum of its proper divisors (432140).

864274 is a wasteful number, since it uses less digits than its factorization.

864274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432139.

The product of its digits is 10752, while the sum is 31.

The square root of 864274 is about 929.6633799392. The cubic root of 864274 is about 95.2541302921.

The spelling of 864274 in words is "eight hundred sixty-four thousand, two hundred seventy-four".