816113787 has 8 divisors (see below), whose sum is σ = 1088293440. Its totient is φ = 544005000.

The previous prime is 816113659. The next prime is 816113791. The reversal of 816113787 is 787311618.

816113787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 816113787 - 2⁷ = 816113659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816113797) 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, 21664 + ... + 45842.

It is an arithmetic number, because the mean of its divisors is an integer number (136036680).

Almost surely, 2^816113787 is an apocalyptic number.

816113787 is a deficient number, since it is larger than the sum of its proper divisors (272179653).

816113787 is a wasteful number, since it uses less digits than its factorization.

816113787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35433.

The product of its digits is 56448, while the sum is 42.

The square root of 816113787 is about 28567.7053156182. The cubic root of 816113787 is about 934.5091791318.

The spelling of 816113787 in words is "eight hundred sixteen million, one hundred thirteen thousand, seven hundred eighty-seven".