816160663 has 8 divisors (see below), whose sum is σ = 839540016. Its totient is φ = 793104000.

The previous prime is 816160603. The next prime is 816160679. The reversal of 816160663 is 366061618.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 816160663 - 2⁹ = 816160151 is a prime.

It is a super-2 number, since 2×816160663² = 1332236455657199138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816160603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75538 + ... + 85663.

It is an arithmetic number, because the mean of its divisors is an integer number (104942502).

Almost surely, 2^816160663 is an apocalyptic number.

816160663 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

816160663 is a deficient number, since it is larger than the sum of its proper divisors (23379353).

816160663 is a wasteful number, since it uses less digits than its factorization.

816160663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161345.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 816160663 is about 28568.5257407518. The cubic root of 816160663 is about 934.5270709234.

The spelling of 816160663 in words is "eight hundred sixteen million, one hundred sixty thousand, six hundred sixty-three".