66424606 has 4 divisors (see below), whose sum is σ = 99636912. Its totient is φ = 33212302.

The previous prime is 66424601. The next prime is 66424613. The reversal of 66424606 is 60642466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60642466 = 2 ⋅30321233.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66424601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606150 + ... + 16606153.

It is an arithmetic number, because the mean of its divisors is an integer number (24909228).

Almost surely, 2^66424606 is an apocalyptic number.

66424606 is a deficient number, since it is larger than the sum of its proper divisors (33212306).

66424606 is a wasteful number, since it uses less digits than its factorization.

66424606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33212305.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 66424606 is about 8150.1292014299. The cubic root of 66424606 is about 404.9887839194.

It can be divided in two parts, 6642460 and 6, that added together give a palindrome (6642466).

The spelling of 66424606 in words is "sixty-six million, four hundred twenty-four thousand, six hundred six".