66156048 has 160 divisors (see below), whose sum is σ = 219985920. Its totient is φ = 18645120.

The previous prime is 66156029. The next prime is 66156071. The reversal of 66156048 is 84065166.

66156048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396061 + ... + 396227.

It is an arithmetic number, because the mean of its divisors is an integer number (1374912).

Almost surely, 2^66156048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66156048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109992960).

66156048 is an abundant number, since it is smaller than the sum of its proper divisors (153829872).

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

66156048 is a wasteful number, since it uses less digits than its factorization.

66156048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 66156048 is about 8133.6368249388. The cubic root of 66156048 is about 404.4422500742.

The spelling of 66156048 in words is "sixty-six million, one hundred fifty-six thousand, forty-eight".