66958422 has 8 divisors (see below), whose sum is σ = 133916856. Its totient is φ = 22319472.

The previous prime is 66958403. The next prime is 66958429. The reversal of 66958422 is 22485966.

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

66958422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66958429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579863 + ... + 5579874.

It is an arithmetic number, because the mean of its divisors is an integer number (16739607).

Almost surely, 2^66958422 is an apocalyptic number.

66958422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66958422 is a wasteful number, since it uses less digits than its factorization.

66958422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159742.

The product of its digits is 207360, while the sum is 42.

The square root of 66958422 is about 8182.8125971453. The cubic root of 66958422 is about 406.0707772133.

The spelling of 66958422 in words is "sixty-six million, nine hundred fifty-eight thousand, four hundred twenty-two".