66158036 has 18 divisors (see below), whose sum is σ = 134679258. Its totient is φ = 28353360.

The previous prime is 66158021. The next prime is 66158041. The reversal of 66158036 is 63085166.

It can be written as a sum of positive squares in only one way, i.e., 60155536 + 6002500 = 7756^2 + 2450^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66157987 and 66158005.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 168575 + ... + 168966.

It is an arithmetic number, because the mean of its divisors is an integer number (7482181).

Almost surely, 2^66158036 is an apocalyptic number.

It is an amenable number.

66158036 is an abundant number, since it is smaller than the sum of its proper divisors (68521222).

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

66158036 is a wasteful number, since it uses less digits than its factorization.

66158036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337559 (or 337550 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 66158036 is about 8133.7590325753. The cubic root of 66158036 is about 404.4463012187.

The spelling of 66158036 in words is "sixty-six million, one hundred fifty-eight thousand, thirty-six".