78488763 has 4 divisors (see below), whose sum is σ = 104651688. Its totient is φ = 52325840.

The previous prime is 78488759. The next prime is 78488771. The reversal of 78488763 is 36788487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36788487 = 3 ⋅12262829.

It is a cyclic number.

It is not a de Polignac number, because 78488763 - 2² = 78488759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78488723) 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, 13081458 + ... + 13081463.

It is an arithmetic number, because the mean of its divisors is an integer number (26162922).

Almost surely, 2^78488763 is an apocalyptic number.

78488763 is a deficient number, since it is larger than the sum of its proper divisors (26162925).

78488763 is a wasteful number, since it uses less digits than its factorization.

78488763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26162924.

The product of its digits is 1806336, while the sum is 51.

The square root of 78488763 is about 8859.3884100428. The cubic root of 78488763 is about 428.1564539236.

The spelling of 78488763 in words is "seventy-eight million, four hundred eighty-eight thousand, seven hundred sixty-three".