66357898 has 16 divisors (see below), whose sum is σ = 104120640. Its totient is φ = 31658176.

The previous prime is 66357883. The next prime is 66357913. The reversal of 66357898 is 89875366.

66357898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66357883) and next prime (66357913).

It is an unprimeable number.

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, 19938 + ... + 23026.

It is an arithmetic number, because the mean of its divisors is an integer number (6507540).

Almost surely, 2^66357898 is an apocalyptic number.

66357898 is a deficient number, since it is larger than the sum of its proper divisors (37762742).

66357898 is a wasteful number, since it uses less digits than its factorization.

66357898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its digits is 2177280, while the sum is 52.

The square root of 66357898 is about 8146.0357229759. The cubic root of 66357898 is about 404.8531663011.

The spelling of 66357898 in words is "sixty-six million, three hundred fifty-seven thousand, eight hundred ninety-eight".