68778260 has 24 divisors (see below), whose sum is σ = 152931240. Its totient is φ = 25892864.

The previous prime is 68778253. The next prime is 68778287. The reversal of 68778260 is 6287786.

It is a happy number.

68778260 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 4072324 + 64705936 = 2018^2 + 8044^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100805 + ... + 101484.

It is an arithmetic number, because the mean of its divisors is an integer number (6372135).

Almost surely, 2^68778260 is an apocalyptic number.

It is an amenable number.

68778260 is an abundant number, since it is smaller than the sum of its proper divisors (84152980).

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

68778260 is a wasteful number, since it uses less digits than its factorization.

68778260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202315 (or 202313 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 68778260 is about 8293.2659429202. The cubic root of 68778260 is about 409.7167585665.

The spelling of 68778260 in words is "sixty-eight million, seven hundred seventy-eight thousand, two hundred sixty".