66740344 has 32 divisors (see below), whose sum is σ = 138763440. Its totient is φ = 29836800.

The previous prime is 66740327. The next prime is 66740347. The reversal of 66740344 is 44304766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66740347) 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, 849 + ... + 11584.

Almost surely, 2^66740344 is an apocalyptic number.

It is an amenable number.

66740344 is an abundant number, since it is smaller than the sum of its proper divisors (72023096).

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

66740344 is a wasteful number, since it uses less digits than its factorization.

66740344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511 (or 12507 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 66740344 is about 8169.4763602082. The cubic root of 66740344 is about 405.6294515194.

The spelling of 66740344 in words is "sixty-six million, seven hundred forty thousand, three hundred forty-four".