68472155 has 8 divisors (see below), whose sum is σ = 83559600. Its totient is φ = 53849056.

The previous prime is 68472139. The next prime is 68472167. The reversal of 68472155 is 55127486.

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

It is a cyclic number.

It is not a de Polignac number, because 68472155 - 2⁴ = 68472139 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115760 + ... + 116349.

It is an arithmetic number, because the mean of its divisors is an integer number (10444950).

Almost surely, 2^68472155 is an apocalyptic number.

68472155 is a deficient number, since it is larger than the sum of its proper divisors (15087445).

68472155 is a wasteful number, since it uses less digits than its factorization.

68472155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232173.

The product of its digits is 67200, while the sum is 38.

The square root of 68472155 is about 8274.7903296700. The cubic root of 68472155 is about 409.1080251799.

The spelling of 68472155 in words is "sixty-eight million, four hundred seventy-two thousand, one hundred fifty-five".