66299396 has 24 divisors (see below), whose sum is σ = 118744920. Its totient is φ = 32378112.

The previous prime is 66299383. The next prime is 66299399. The reversal of 66299396 is 69399266.

66299396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 462400 + 65836996 = 680^2 + 8114^2 .

It is not an unprimeable number, because it can be changed into a prime (66299399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58160 + ... + 59288.

It is an arithmetic number, because the mean of its divisors is an integer number (4947705).

Almost surely, 2^66299396 is an apocalyptic number.

It is an amenable number.

66299396 is a deficient number, since it is larger than the sum of its proper divisors (52445524).

66299396 is a wasteful number, since it uses less digits than its factorization.

66299396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1461 counting only the distinct ones).

The product of its digits is 944784, while the sum is 50.

The square root of 66299396 is about 8142.4441048128. Note that the first 3 decimals coincide. The cubic root of 66299396 is about 404.7341566865.

The spelling of 66299396 in words is "sixty-six million, two hundred ninety-nine thousand, three hundred ninety-six".