864746 has 4 divisors (see below), whose sum is σ = 1297122. Its totient is φ = 432372.

The previous prime is 864737. The next prime is 864757. The reversal of 864746 is 647468.

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., 657721 + 207025 = 811^2 + 455^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 216185 + ... + 216188.

2⁸⁶⁴⁷⁴⁶ is an apocalyptic number.

864746 is a deficient number, since it is larger than the sum of its proper divisors (432376).

864746 is a wasteful number, since it uses less digits than its factorization.

864746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432375.

The product of its digits is 32256, while the sum is 35.

The square root of 864746 is about 929.9172006152. The cubic root of 864746 is about 95.2714672969.

It can be divided in two parts, 86 and 4746, that multiplied together give a triangular number (408156 = T₉₀₃).

The spelling of 864746 in words is "eight hundred sixty-four thousand, seven hundred forty-six".