66424205 has 8 divisors (see below), whose sum is σ = 80318304. Its totient is φ = 52733200.

The previous prime is 66424201. The next prime is 66424229. The reversal of 66424205 is 50242466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66424205 - 2² = 66424201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66424201) 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, 50051 + ... + 51360.

It is an arithmetic number, because the mean of its divisors is an integer number (10039788).

Almost surely, 2^66424205 is an apocalyptic number.

It is an amenable number.

66424205 is a deficient number, since it is larger than the sum of its proper divisors (13894099).

66424205 is a wasteful number, since it uses less digits than its factorization.

66424205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101547.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 66424205 is about 8150.1046005557. The cubic root of 66424205 is about 404.9879689562.

The spelling of 66424205 in words is "sixty-six million, four hundred twenty-four thousand, two hundred five".