68775780 has 24 divisors (see below), whose sum is σ = 192572352. Its totient is φ = 18340192.

The previous prime is 68775767. The next prime is 68775787. The reversal of 68775780 is 8757786.

It is not an unprimeable number, because it can be changed into a prime (68775787) 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 7 ways as a sum of consecutive naturals, for example, 573072 + ... + 573191.

It is an arithmetic number, because the mean of its divisors is an integer number (8023848).

Almost surely, 2^68775780 is an apocalyptic number.

68775780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68775780 is an abundant number, since it is smaller than the sum of its proper divisors (123796572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68775780 is a wasteful number, since it uses less digits than its factorization.

68775780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146275 (or 1146273 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 68775780 is about 8293.1164226725. The cubic root of 68775780 is about 409.7118339979.

It can be divided in two parts, 687 and 75780, that added together give a palindrome (76467).

The spelling of 68775780 in words is "sixty-eight million, seven hundred seventy-five thousand, seven hundred eighty".