816463087 has 4 divisors (see below), whose sum is σ = 890687016. Its totient is φ = 742239160.

The previous prime is 816463073. The next prime is 816463103. The reversal of 816463087 is 780364618.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816463087 is a prime.

It is a super-3 number, since 3×816463087³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816463787) 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 3 ways as a sum of consecutive naturals, for example, 37111948 + ... + 37111969.

It is an arithmetic number, because the mean of its divisors is an integer number (222671754).

Almost surely, 2^816463087 is an apocalyptic number.

816463087 is a deficient number, since it is larger than the sum of its proper divisors (74223929).

816463087 is a wasteful number, since it uses less digits than its factorization.

816463087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74223928.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 816463087 is about 28573.8182082829. The cubic root of 816463087 is about 934.6424846839.

The spelling of 816463087 in words is "eight hundred sixteen million, four hundred sixty-three thousand, eighty-seven".