66265604 has 12 divisors (see below), whose sum is σ = 117553884. Its totient is φ = 32678784.

The previous prime is 66265579. The next prime is 66265627. The reversal of 66265604 is 40656266.

It can be written as a sum of positive squares in 2 ways, for example, as 56280004 + 9985600 = 7502^2 + 3160^2 .

It is a super-2 number, since 2×66265604² = 8782260546969632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113177 + ... + 113760.

It is an arithmetic number, because the mean of its divisors is an integer number (9796157).

Almost surely, 2^66265604 is an apocalyptic number.

It is an amenable number.

66265604 is a deficient number, since it is larger than the sum of its proper divisors (51288280).

66265604 is a wasteful number, since it uses less digits than its factorization.

66265604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227014 (or 227012 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 66265604 is about 8140.3687877147. The cubic root of 66265604 is about 404.6653822997.

It can be divided in two parts, 662 and 65604, that added together give a palindrome (66266).

The spelling of 66265604 in words is "sixty-six million, two hundred sixty-five thousand, six hundred four".