66431068 has 48 divisors (see below), whose sum is σ = 134467200. Its totient is φ = 28399680.

The previous prime is 66431063. The next prime is 66431093. The reversal of 66431068 is 86013466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66431063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191271 + ... + 191617.

It is an arithmetic number, because the mean of its divisors is an integer number (2801400).

Almost surely, 2^66431068 is an apocalyptic number.

It is an amenable number.

66431068 is an abundant number, since it is smaller than the sum of its proper divisors (68036132).

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

66431068 is a wasteful number, since it uses less digits than its factorization.

66431068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 66431068 is about 8150.5256272218. The cubic root of 66431068 is about 405.0019163655.

It can be divided in two parts, 66 and 431068, that added together give a palindrome (431134).

The spelling of 66431068 in words is "sixty-six million, four hundred thirty-one thousand, sixty-eight".