7916863 has 4 divisors (see below), whose sum is σ = 8333560. Its totient is φ = 7500168.

The previous prime is 7916861. The next prime is 7916879. The reversal of 7916863 is 3686197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3686197 = 101 ⋅36497.

It is a cyclic number.

It is not a de Polignac number, because 7916863 - 2¹ = 7916861 is a prime.

It is a Duffinian number.

7916863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7916861) 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, 208320 + ... + 208357.

It is an arithmetic number, because the mean of its divisors is an integer number (2083390).

Almost surely, 2^7916863 is an apocalyptic number.

7916863 is a deficient number, since it is larger than the sum of its proper divisors (416697).

7916863 is a wasteful number, since it uses less digits than its factorization.

7916863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416696.

The product of its digits is 54432, while the sum is 40.

The square root of 7916863 is about 2813.6920584883. The cubic root of 7916863 is about 199.3047777973.

The spelling of 7916863 in words is "seven million, nine hundred sixteen thousand, eight hundred sixty-three".