66227570 has 16 divisors (see below), whose sum is σ = 120550680. Its totient is φ = 26193024.

The previous prime is 66227569. The next prime is 66227591. The reversal of 66227570 is 7572266.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43864129 + 22363441 = 6623^2 + 4729^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66227570.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36317 + ... + 38096.

Almost surely, 2^66227570 is an apocalyptic number.

66227570 is a deficient number, since it is larger than the sum of its proper divisors (54323110).

66227570 is a wasteful number, since it uses less digits than its factorization.

66227570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74509.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 66227570 is about 8138.0323174586. The cubic root of 66227570 is about 404.5879465070.

The spelling of 66227570 in words is "sixty-six million, two hundred twenty-seven thousand, five hundred seventy".