66748280 has 32 divisors (see below), whose sum is σ = 152247600. Its totient is φ = 26332416.

The previous prime is 66748271. The next prime is 66748289. The reversal of 66748280 is 8284766.

It is an interprime number because it is at equal distance from previous prime (66748271) and next prime (66748289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66748289) 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, 8510 + ... + 14349.

Almost surely, 2^66748280 is an apocalyptic number.

It is an amenable number.

66748280 is an abundant number, since it is smaller than the sum of its proper divisors (85499320).

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

66748280 is a wasteful number, since it uses less digits than its factorization.

66748280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22943 (or 22939 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 66748280 is about 8169.9620562154. The cubic root of 66748280 is about 405.6455284905.

The spelling of 66748280 in words is "sixty-six million, seven hundred forty-eight thousand, two hundred eighty".