78854711 has 4 divisors (see below), whose sum is σ = 84920472. Its totient is φ = 72788952.

The previous prime is 78854689. The next prime is 78854723. The reversal of 78854711 is 11745887.

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 78854711 - 2¹⁸ = 78592567 is a prime.

It is a super-3 number, since 3×78854711³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78854771) 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, 3032861 + ... + 3032886.

It is an arithmetic number, because the mean of its divisors is an integer number (21230118).

Almost surely, 2^78854711 is an apocalyptic number.

78854711 is a deficient number, since it is larger than the sum of its proper divisors (6065761).

78854711 is a wasteful number, since it uses less digits than its factorization.

78854711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6065760.

The product of its digits is 62720, while the sum is 41.

The square root of 78854711 is about 8880.0175112440. The cubic root of 78854711 is about 428.8208382814.

The spelling of 78854711 in words is "seventy-eight million, eight hundred fifty-four thousand, seven hundred eleven".