66707412 has 24 divisors (see below), whose sum is σ = 160672512. Its totient is φ = 21518400.

The previous prime is 66707359. The next prime is 66707413. The reversal of 66707412 is 21470766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66707413) 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, 89289 + ... + 90032.

It is an arithmetic number, because the mean of its divisors is an integer number (6694688).

Almost surely, 2^66707412 is an apocalyptic number.

66707412 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66707412 is an abundant number, since it is smaller than the sum of its proper divisors (93965100).

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

66707412 is a wasteful number, since it uses less digits than its factorization.

66707412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179359 (or 179357 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 66707412 is about 8167.4605600517. The cubic root of 66707412 is about 405.5627233306.

The spelling of 66707412 in words is "sixty-six million, seven hundred seven thousand, four hundred twelve".