78643463 has 8 divisors (see below), whose sum is σ = 84281568. Its totient is φ = 73190304.

The previous prime is 78643393. The next prime is 78643507. The reversal of 78643463 is 36434687.

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 78643463 - 2¹⁰ = 78642439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78643463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78643163) 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, 45356 + ... + 47057.

It is an arithmetic number, because the mean of its divisors is an integer number (10535196).

Almost surely, 2^78643463 is an apocalyptic number.

78643463 is a deficient number, since it is larger than the sum of its proper divisors (5638105).

78643463 is a wasteful number, since it uses less digits than its factorization.

78643463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92473.

The product of its digits is 290304, while the sum is 41.

The square root of 78643463 is about 8868.1149631700. The cubic root of 78643463 is about 428.4375656477.

The spelling of 78643463 in words is "seventy-eight million, six hundred forty-three thousand, four hundred sixty-three".