66748146 has 16 divisors (see below), whose sum is σ = 137803008. Its totient is φ = 21531600.

The previous prime is 66748141. The next prime is 66748151. The reversal of 66748146 is 64184766.

It is an interprime number because it is at equal distance from previous prime (66748141) and next prime (66748151).

It is a junction number, because it is equal to n+sod(n) for n = 66748098 and 66748107.

It is not an unprimeable number, because it can be changed into a prime (66748141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179245 + ... + 179616.

It is an arithmetic number, because the mean of its divisors is an integer number (8612688).

Almost surely, 2^66748146 is an apocalyptic number.

66748146 is an abundant number, since it is smaller than the sum of its proper divisors (71054862).

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

66748146 is a wasteful number, since it uses less digits than its factorization.

66748146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358897.

The product of its digits is 193536, while the sum is 42.

The square root of 66748146 is about 8169.9538554388. The cubic root of 66748146 is about 405.6452570401.

The spelling of 66748146 in words is "sixty-six million, seven hundred forty-eight thousand, one hundred forty-six".