66727652 has 12 divisors (see below), whose sum is σ = 123642540. Its totient is φ = 31401216.

The previous prime is 66727559. The next prime is 66727667. The reversal of 66727652 is 25672766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26481316 + 40246336 = 5146^2 + 6344^2 .

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, 490577 + ... + 490712.

It is an arithmetic number, because the mean of its divisors is an integer number (10303545).

Almost surely, 2^66727652 is an apocalyptic number.

It is an amenable number.

66727652 is a deficient number, since it is larger than the sum of its proper divisors (56914888).

66727652 is a wasteful number, since it uses less digits than its factorization.

66727652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981310 (or 981308 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 66727652 is about 8168.6995293009. The cubic root of 66727652 is about 405.6037370611.

The spelling of 66727652 in words is "sixty-six million, seven hundred twenty-seven thousand, six hundred fifty-two".