66531048 has 16 divisors (see below), whose sum is σ = 166327680. Its totient is φ = 22177008.

The previous prime is 66531041. The next prime is 66531061. The reversal of 66531048 is 84013566.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66531041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1386040 + ... + 1386087.

It is an arithmetic number, because the mean of its divisors is an integer number (10395480).

Almost surely, 2^66531048 is an apocalyptic number.

It is an amenable number.

66531048 is an abundant number, since it is smaller than the sum of its proper divisors (99796632).

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

66531048 is a wasteful number, since it uses less digits than its factorization.

66531048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772136 (or 2772132 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 66531048 is about 8156.6566680228. The cubic root of 66531048 is about 405.2049930082.

It can be divided in two parts, 665 and 31048, that added together give a palindrome (31713).

The spelling of 66531048 in words is "sixty-six million, five hundred thirty-one thousand, forty-eight".