68152178 has 8 divisors (see below), whose sum is σ = 102276972. Its totient is φ = 34059856.

The previous prime is 68152177. The next prime is 68152219. The reversal of 68152178 is 87125186.

It can be written as a sum of positive squares in 2 ways, for example, as 62615569 + 5536609 = 7913^2 + 2353^2 .

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

It is a super-2 number, since 2×68152178² = 9289438732287368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68152171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925 + ... + 11832.

Almost surely, 2^68152178 is an apocalyptic number.

68152178 is a deficient number, since it is larger than the sum of its proper divisors (34124794).

68152178 is a wasteful number, since it uses less digits than its factorization.

68152178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16236.

The product of its digits is 26880, while the sum is 38.

The square root of 68152178 is about 8255.4332412055. The cubic root of 68152178 is about 408.4697628067.

The spelling of 68152178 in words is "sixty-eight million, one hundred fifty-two thousand, one hundred seventy-eight".