66049158 has 48 divisors (see below), whose sum is σ = 158644224. Its totient is φ = 18259920.

The previous prime is 66049141. The next prime is 66049163. The reversal of 66049158 is 85194066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5491 + ... + 12737.

It is an arithmetic number, because the mean of its divisors is an integer number (3305088).

Almost surely, 2^66049158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66049158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79322112).

66049158 is an abundant number, since it is smaller than the sum of its proper divisors (92595066).

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

66049158 is a wasteful number, since it uses less digits than its factorization.

66049158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297 (or 7290 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 66049158 is about 8127.0633072470. The cubic root of 66049158 is about 404.2243101307.

The spelling of 66049158 in words is "sixty-six million, forty-nine thousand, one hundred fifty-eight".