66375858 has 8 divisors (see below), whose sum is σ = 132751728. Its totient is φ = 22125284.

The previous prime is 66375823. The next prime is 66375863. The reversal of 66375858 is 85857366.

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

66375858 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5531316 + ... + 5531327.

It is an arithmetic number, because the mean of its divisors is an integer number (16593966).

Almost surely, 2^66375858 is an apocalyptic number.

66375858 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.

66375858 is a wasteful number, since it uses less digits than its factorization.

66375858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11062648.

The product of its digits is 1209600, while the sum is 48.

The square root of 66375858 is about 8147.1380250981. The cubic root of 66375858 is about 404.8896879872.

The spelling of 66375858 in words is "sixty-six million, three hundred seventy-five thousand, eight hundred fifty-eight".