68172458 has 8 divisors (see below), whose sum is σ = 104636928. Its totient is φ = 33293484.

The previous prime is 68172427. The next prime is 68172491. The reversal of 68172458 is 85427186.

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

It is a Curzon number.

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, 396266 + ... + 396437.

It is an arithmetic number, because the mean of its divisors is an integer number (13079616).

Almost surely, 2^68172458 is an apocalyptic number.

68172458 is a deficient number, since it is larger than the sum of its proper divisors (36464470).

68172458 is a wasteful number, since it uses less digits than its factorization.

68172458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792748.

The product of its digits is 107520, while the sum is 41.

The square root of 68172458 is about 8256.6614318379. The cubic root of 68172458 is about 408.5102748173.

The spelling of 68172458 in words is "sixty-eight million, one hundred seventy-two thousand, four hundred fifty-eight".