866746 has 4 divisors (see below), whose sum is σ = 1300122. Its totient is φ = 433372.

The previous prime is 866743. The next prime is 866759. The reversal of 866746 is 647668.

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., 783225 + 83521 = 885^2 + 289^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (866743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216685 + ... + 216688.

2⁸⁶⁶⁷⁴⁶ is an apocalyptic number.

866746 is a deficient number, since it is larger than the sum of its proper divisors (433376).

866746 is a wasteful number, since it uses less digits than its factorization.

866746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433375.

The product of its digits is 48384, while the sum is 37.

The square root of 866746 is about 930.9919441112. The cubic root of 866746 is about 95.3448592625.

The spelling of 866746 in words is "eight hundred sixty-six thousand, seven hundred forty-six".