816366 has 16 divisors (see below), whose sum is σ = 1641600. Its totient is φ = 270648.

The previous prime is 816353. The next prime is 816367. The reversal of 816366 is 663618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1965 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2⁸¹⁶³⁶⁶ is an apocalyptic number.

816366 is an abundant number, since it is smaller than the sum of its proper divisors (825234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816366 is a wasteful number, since it uses less digits than its factorization.

816366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its digits is 5184, while the sum is 30.

The square root of 816366 is about 903.5297449448. The cubic root of 816366 is about 93.4605436578.

The spelling of 816366 in words is "eight hundred sixteen thousand, three hundred sixty-six".