68395490 has 16 divisors (see below), whose sum is σ = 123206400. Its totient is φ = 27337200.

The previous prime is 68395487. The next prime is 68395501. The reversal of 68395490 is 9459386.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22565 + ... + 25415.

It is an arithmetic number, because the mean of its divisors is an integer number (7700400).

Almost surely, 2^68395490 is an apocalyptic number.

68395490 is a deficient number, since it is larger than the sum of its proper divisors (54810910).

68395490 is a wasteful number, since it uses less digits than its factorization.

68395490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 68395490 is about 8270.1565886022. The cubic root of 68395490 is about 408.9552819237.

The spelling of 68395490 in words is "sixty-eight million, three hundred ninety-five thousand, four hundred ninety".