68475390 has 16 divisors (see below), whose sum is σ = 164341008. Its totient is φ = 18260096.

The previous prime is 68475389. The next prime is 68475391. The reversal of 68475390 is 9357486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68475389) and next prime (68475391).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68475391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141227 + ... + 1141286.

It is an arithmetic number, because the mean of its divisors is an integer number (10271313).

Almost surely, 2^68475390 is an apocalyptic number.

68475390 is an abundant number, since it is smaller than the sum of its proper divisors (95865618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68475390 is a wasteful number, since it uses less digits than its factorization.

68475390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282523.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 68475390 is about 8274.9858005920. The cubic root of 68475390 is about 409.1144679137.

The spelling of 68475390 in words is "sixty-eight million, four hundred seventy-five thousand, three hundred ninety".