68138170 has 8 divisors (see below), whose sum is σ = 122648724. Its totient is φ = 27255264.

The previous prime is 68138143. The next prime is 68138207. The reversal of 68138170 is 7183186.

It can be written as a sum of positive squares in 2 ways, for example, as 67881121 + 257049 = 8239^2 + 507^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406899 + ... + 3406918.

Almost surely, 2^68138170 is an apocalyptic number.

68138170 is a deficient number, since it is larger than the sum of its proper divisors (54510554).

68138170 is a wasteful number, since it uses less digits than its factorization.

68138170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6813824.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 68138170 is about 8254.5847866504. The cubic root of 68138170 is about 408.4417752614.

The spelling of 68138170 in words is "sixty-eight million, one hundred thirty-eight thousand, one hundred seventy".