66741340 has 24 divisors (see below), whose sum is σ = 143946432. Its totient is φ = 25974720.

The previous prime is 66741329. The next prime is 66741347. The reversal of 66741340 is 4314766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66741347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44356 + ... + 45835.

It is an arithmetic number, because the mean of its divisors is an integer number (5997768).

Almost surely, 2^66741340 is an apocalyptic number.

It is an amenable number.

66741340 is an abundant number, since it is smaller than the sum of its proper divisors (77205092).

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

66741340 is a wasteful number, since it uses less digits than its factorization.

66741340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90237 (or 90235 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 66741340 is about 8169.5373186001. The cubic root of 66741340 is about 405.6314693140.

It can be divided in two parts, 66741 and 340, that added together give a square (67081 = 259²).

The spelling of 66741340 in words is "sixty-six million, seven hundred forty-one thousand, three hundred forty".