68612786 has 8 divisors (see below), whose sum is σ = 112275504. Its totient is φ = 31187620.

The previous prime is 68612783. The next prime is 68612807. The reversal of 68612786 is 68721686.

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

It is not an unprimeable number, because it can be changed into a prime (68612783) 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 3 ways as a sum of consecutive naturals, for example, 1559360 + ... + 1559403.

It is an arithmetic number, because the mean of its divisors is an integer number (14034438).

Almost surely, 2^68612786 is an apocalyptic number.

68612786 is a deficient number, since it is larger than the sum of its proper divisors (43662718).

68612786 is a wasteful number, since it uses less digits than its factorization.

68612786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118776.

The product of its digits is 193536, while the sum is 44.

The square root of 68612786 is about 8283.2835276839. The cubic root of 68612786 is about 409.3879147568.

Subtracting 68612786 from its reverse (68721686), we obtain a square (108900 = 330²).

The spelling of 68612786 in words is "sixty-eight million, six hundred twelve thousand, seven hundred eighty-six".