78416863 has 6 divisors (see below), whose sum is σ = 89646056. Its totient is φ = 67194372.

The previous prime is 78416861. The next prime is 78416911. The reversal of 78416863 is 36861487.

It is not a de Polignac number, because 78416863 - 2¹ = 78416861 is a prime.

It is a super-3 number, since 3×78416863³ (a number of 25 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 (78416861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21756 + ... + 25102.

Almost surely, 2^78416863 is an apocalyptic number.

78416863 is a deficient number, since it is larger than the sum of its proper divisors (11229193).

78416863 is an frugal number, since it uses more digits than its factorization.

78416863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701 (or 3354 counting only the distinct ones).

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

The square root of 78416863 is about 8855.3296381332. The cubic root of 78416863 is about 428.0256757386.

The spelling of 78416863 in words is "seventy-eight million, four hundred sixteen thousand, eight hundred sixty-three".