787878788 has 6 divisors (see below), whose sum is σ = 1378787886. Its totient is φ = 393939392.

The previous prime is 787878781. The next prime is 787878797. The reversal of 787878788 is 887878787.

787878788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 770506564 + 17372224 = 27758^2 + 4168^2 .

It is not an unprimeable number, because it can be changed into a prime (787878781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98484845 + ... + 98484852.

It is an arithmetic number, because the mean of its divisors is an integer number (229797981).

Almost surely, 2^787878788 is an apocalyptic number.

It is an amenable number.

787878788 is a deficient number, since it is larger than the sum of its proper divisors (590909098).

787878788 is a wasteful number, since it uses less digits than its factorization.

787878788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196969701 (or 196969699 counting only the distinct ones).

The product of its digits is 78675968, while the sum is 68.

The square root of 787878788 is about 28069.1786128486. The cubic root of 787878788 is about 923.6054126857.

Subtracting 787878788 from its reverse (887878787), we obtain a palindrome (99999999).

It can be divided in two parts, 7 and 87878788, that multiplied together give a palindrome (615151516).

The spelling of 787878788 in words is "seven hundred eighty-seven million, eight hundred seventy-eight thousand, seven hundred eighty-eight".