7913863 has 8 divisors (see below), whose sum is σ = 8307936. Its totient is φ = 7524000.

The previous prime is 7913833. The next prime is 7913887. The reversal of 7913863 is 3683197.

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 7913863 - 2⁵ = 7913831 is a prime.

It is a Duffinian number.

7913863 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7913833) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3213 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (1038492).

Almost surely, 2^7913863 is an apocalyptic number.

7913863 is a deficient number, since it is larger than the sum of its proper divisors (394073).

7913863 is a wasteful number, since it uses less digits than its factorization.

7913863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its digits is 27216, while the sum is 37.

The square root of 7913863 is about 2813.1589005956. The cubic root of 7913863 is about 199.2795999007.

The spelling of 7913863 in words is "seven million, nine hundred thirteen thousand, eight hundred sixty-three".