663158 has 4 divisors (see below), whose sum is σ = 994740. Its totient is φ = 331578.

The previous prime is 663149. The next prime is 663161. The reversal of 663158 is 851366.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 663158.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 663158.

It is an unprimeable number.

663158 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 165788 + ... + 165791.

It is an arithmetic number, because the mean of its divisors is an integer number (248685).

2⁶⁶³¹⁵⁸ is an apocalyptic number.

663158 is a deficient number, since it is larger than the sum of its proper divisors (331582).

663158 is a wasteful number, since it uses less digits than its factorization.

663158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331581.

The product of its digits is 4320, while the sum is 29.

The square root of 663158 is about 814.3451356765. The cubic root of 663158 is about 87.2045216913.

The spelling of 663158 in words is "six hundred sixty-three thousand, one hundred fifty-eight".