66452838 has 8 divisors (see below), whose sum is σ = 132905688. Its totient is φ = 22150944.

The previous prime is 66452801. The next prime is 66452843. The reversal of 66452838 is 83825466.

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

66452838 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 66452838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5537731 + ... + 5537742.

It is an arithmetic number, because the mean of its divisors is an integer number (16613211).

Almost surely, 2^66452838 is an apocalyptic number.

66452838 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.

66452838 is a wasteful number, since it uses less digits than its factorization.

66452838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075478.

The product of its digits is 276480, while the sum is 42.

The square root of 66452838 is about 8151.8610145169. The cubic root of 66452838 is about 405.0461523384.

The spelling of 66452838 in words is "sixty-six million, four hundred fifty-two thousand, eight hundred thirty-eight".