75668345 has 8 divisors (see below), whose sum is σ = 91635720. Its totient is φ = 59978880.

The previous prime is 75668287. The next prime is 75668353. The reversal of 75668345 is 54386657.

It can be written as a sum of positive squares in 4 ways, for example, as 2446096 + 73222249 = 1564^2 + 8557^2 .

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

It is not a de Polignac number, because 75668345 - 2¹² = 75664249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75668296 and 75668305.

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, 68876 + ... + 69965.

It is an arithmetic number, because the mean of its divisors is an integer number (11454465).

Almost surely, 2^75668345 is an apocalyptic number.

It is an amenable number.

75668345 is a deficient number, since it is larger than the sum of its proper divisors (15967375).

75668345 is a wasteful number, since it uses less digits than its factorization.

75668345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138955.

The product of its digits is 604800, while the sum is 44.

The square root of 75668345 is about 8698.7553707413. The cubic root of 75668345 is about 422.9653055542.

The spelling of 75668345 in words is "seventy-five million, six hundred sixty-eight thousand, three hundred forty-five".