68166612 has 18 divisors (see below), whose sum is σ = 172310138. Its totient is φ = 22722192.

The previous prime is 68166607. The next prime is 68166629. The reversal of 68166612 is 21666186.

It can be written as a sum of positive squares in only one way, i.e., 60746436 + 7420176 = 7794^2 + 2724^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1893517 = 68166612 / (6 + 8 + 1 + 6 + 6 + 6 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 946723 + ... + 946794.

Almost surely, 2^68166612 is an apocalyptic number.

It is an amenable number.

68166612 is an abundant number, since it is smaller than the sum of its proper divisors (104143526).

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

68166612 is a wasteful number, since it uses less digits than its factorization.

68166612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893527 (or 1893522 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 68166612 is about 8256.3074070676. The cubic root of 68166612 is about 408.4985974752.

It can be divided in two parts, 6 and 8166612, that added together give a palindrome (8166618).

The spelling of 68166612 in words is "sixty-eight million, one hundred sixty-six thousand, six hundred twelve".