78763271 has 4 divisors (see below), whose sum is σ = 78796632. Its totient is φ = 78729912.

The previous prime is 78763259. The next prime is 78763297. The reversal of 78763271 is 17236787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78763271 - 2⁶ = 78763207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78763231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12845 + ... + 17958.

It is an arithmetic number, because the mean of its divisors is an integer number (19699158).

Almost surely, 2^78763271 is an apocalyptic number.

78763271 is a deficient number, since it is larger than the sum of its proper divisors (33361).

78763271 is a wasteful number, since it uses less digits than its factorization.

78763271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360.

The product of its digits is 98784, while the sum is 41.

The square root of 78763271 is about 8874.8673792908. The cubic root of 78763271 is about 428.6550204829.

The spelling of 78763271 in words is "seventy-eight million, seven hundred sixty-three thousand, two hundred seventy-one".