816258 has 8 divisors (see below), whose sum is σ = 1632528. Its totient is φ = 272084.

The previous prime is 816251. The next prime is 816271. The reversal of 816258 is 852618.

It is a sphenic number, since it is the product of 3 distinct primes.

816258 is an admirable number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 816258.

It is not an unprimeable number, because it can be changed into a prime (816251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68016 + ... + 68027.

It is an arithmetic number, because the mean of its divisors is an integer number (204066).

2⁸¹⁶²⁵⁸ is an apocalyptic number.

816258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

816258 is a wasteful number, since it uses less digits than its factorization.

816258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136048.

The product of its digits is 3840, while the sum is 30.

The square root of 816258 is about 903.4699773650. The cubic root of 816258 is about 93.4564220654.

The spelling of 816258 in words is "eight hundred sixteen thousand, two hundred fifty-eight".