66707414 has 4 divisors (see below), whose sum is σ = 100061124. Its totient is φ = 33353706.

The previous prime is 66707413. The next prime is 66707419. The reversal of 66707414 is 41470766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41470766 = 2 ⋅20735383.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 16676852 + ... + 16676855.

It is an arithmetic number, because the mean of its divisors is an integer number (25015281).

Almost surely, 2^66707414 is an apocalyptic number.

66707414 is a deficient number, since it is larger than the sum of its proper divisors (33353710).

66707414 is a wasteful number, since it uses less digits than its factorization.

66707414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33353709.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 66707414 is about 8167.4606824888. The cubic root of 66707414 is about 405.5627273837.

The spelling of 66707414 in words is "sixty-six million, seven hundred seven thousand, four hundred fourteen".