68778562 has 8 divisors (see below), whose sum is σ = 103311936. Its totient is φ = 34341252.

The previous prime is 68778557. The next prime is 68778587. The reversal of 68778562 is 26587786.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 22198 + ... + 25105.

It is an arithmetic number, because the mean of its divisors is an integer number (12913992).

Almost surely, 2^68778562 is an apocalyptic number.

68778562 is a deficient number, since it is larger than the sum of its proper divisors (34533374).

68778562 is a wasteful number, since it uses less digits than its factorization.

68778562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48032.

The product of its digits is 1128960, while the sum is 49.

The square root of 68778562 is about 8293.2841504437. The cubic root of 68778562 is about 409.7173582438.

The spelling of 68778562 in words is "sixty-eight million, seven hundred seventy-eight thousand, five hundred sixty-two".