66413614 has 4 divisors (see below), whose sum is σ = 99620424. Its totient is φ = 33206806.

The previous prime is 66413597. The next prime is 66413639. The reversal of 66413614 is 41631466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41631466 = 2 ⋅20815733.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16603402 + ... + 16603405.

It is an arithmetic number, because the mean of its divisors is an integer number (24905106).

Almost surely, 2^66413614 is an apocalyptic number.

66413614 is a deficient number, since it is larger than the sum of its proper divisors (33206810).

66413614 is a wasteful number, since it uses less digits than its factorization.

66413614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33206809.

The product of its digits is 10368, while the sum is 31.

The square root of 66413614 is about 8149.4548283919. The cubic root of 66413614 is about 404.9664433915.

The spelling of 66413614 in words is "sixty-six million, four hundred thirteen thousand, six hundred fourteen".