66224570 has 8 divisors (see below), whose sum is σ = 119204244. Its totient is φ = 26489824.

The previous prime is 66224479. The next prime is 66224617. The reversal of 66224570 is 7542266.

It can be written as a sum of positive squares in 2 ways, for example, as 55965361 + 10259209 = 7481^2 + 3203^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3311219 + ... + 3311238.

Almost surely, 2^66224570 is an apocalyptic number.

66224570 is a deficient number, since it is larger than the sum of its proper divisors (52979674).

66224570 is a wasteful number, since it uses less digits than its factorization.

66224570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622464.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 66224570 is about 8137.8479956313. The cubic root of 66224570 is about 404.5818373586.

The spelling of 66224570 in words is "sixty-six million, two hundred twenty-four thousand, five hundred seventy".