68345554 has 8 divisors (see below), whose sum is σ = 103171788. Its totient is φ = 33954960.

The previous prime is 68345551. The next prime is 68345569. The reversal of 68345554 is 45554386.

It can be written as a sum of positive squares in 2 ways, for example, as 67486225 + 859329 = 8215^2 + 927^2 .

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

It is a super-2 number, since 2×68345554² = 9342229503133832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68345551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 108517 + ... + 109144.

Almost surely, 2^68345554 is an apocalyptic number.

68345554 is a deficient number, since it is larger than the sum of its proper divisors (34826234).

68345554 is a wasteful number, since it uses less digits than its factorization.

68345554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217820.

The product of its digits is 288000, while the sum is 40.

The square root of 68345554 is about 8267.1369893089. The cubic root of 68345554 is about 408.8557307060.

The spelling of 68345554 in words is "sixty-eight million, three hundred forty-five thousand, five hundred fifty-four".