66575058 has 32 divisors (see below), whose sum is σ = 146083392. Its totient is φ = 20059200.

The previous prime is 66575057. The next prime is 66575063. The reversal of 66575058 is 85057566.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66575057) 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, 9160 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (4565106).

Almost surely, 2^66575058 is an apocalyptic number.

66575058 is an abundant number, since it is smaller than the sum of its proper divisors (79508334).

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

66575058 is a wasteful number, since it uses less digits than its factorization.

66575058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 66575058 is about 8159.3540185483. The cubic root of 66575058 is about 405.2943204303.

It can be divided in two parts, 66 and 575058, that multiplied together give a triangular number (37953828 = T₈₇₁₂).

The spelling of 66575058 in words is "sixty-six million, five hundred seventy-five thousand, fifty-eight".