68147855 has 8 divisors (see below), whose sum is σ = 82280112. Its totient is φ = 54183168.

The previous prime is 68147843. The next prime is 68147861. The reversal of 68147855 is 55874186.

It is a happy number.

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 68147855 - 2²² = 63953551 is a prime.

It is a super-2 number, since 2×68147855² = 9288260282202050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40994 + ... + 42623.

It is an arithmetic number, because the mean of its divisors is an integer number (10285014).

Almost surely, 2^68147855 is an apocalyptic number.

68147855 is a deficient number, since it is larger than the sum of its proper divisors (14132257).

68147855 is a wasteful number, since it uses less digits than its factorization.

68147855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83785.

The product of its digits is 268800, while the sum is 44.

The square root of 68147855 is about 8255.1714094863. The cubic root of 68147855 is about 408.4611259973.

The spelling of 68147855 in words is "sixty-eight million, one hundred forty-seven thousand, eight hundred fifty-five".