78636476 has 24 divisors (see below), whose sum is σ = 141501024. Its totient is φ = 38223360.

The previous prime is 78636473. The next prime is 78636511. The reversal of 78636476 is 67463687.

It is a self number, because there is not a number n which added to its sum of digits gives 78636476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78636473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18836 + ... + 22628.

It is an arithmetic number, because the mean of its divisors is an integer number (5895876).

Almost surely, 2^78636476 is an apocalyptic number.

It is an amenable number.

78636476 is a deficient number, since it is larger than the sum of its proper divisors (62864548).

78636476 is a wasteful number, since it uses less digits than its factorization.

78636476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941 (or 3939 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 78636476 is about 8867.7210150072. The cubic root of 78636476 is about 428.4248772359.

The spelling of 78636476 in words is "seventy-eight million, six hundred thirty-six thousand, four hundred seventy-six".