66505058 has 8 divisors (see below), whose sum is σ = 102453852. Its totient is φ = 32353776.

The previous prime is 66505057. The next prime is 66505069. The reversal of 66505058 is 85050566.

It can be written as a sum of positive squares in 2 ways, for example, as 65885689 + 619369 = 8117^2 + 787^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66505051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449285 + ... + 449432.

Almost surely, 2^66505058 is an apocalyptic number.

66505058 is a deficient number, since it is larger than the sum of its proper divisors (35948794).

66505058 is a wasteful number, since it uses less digits than its factorization.

66505058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898756.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 66505058 is about 8155.0633351311. The cubic root of 66505058 is about 405.1522224110.

The spelling of 66505058 in words is "sixty-six million, five hundred five thousand, fifty-eight".