66857230 has 32 divisors (see below), whose sum is σ = 131839488. Its totient is φ = 24208800.

The previous prime is 66857227. The next prime is 66857279. The reversal of 66857230 is 3275866.

It is a self number, because there is not a number n which added to its sum of digits gives 66857230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27775 + ... + 30085.

It is an arithmetic number, because the mean of its divisors is an integer number (4119984).

Almost surely, 2^66857230 is an apocalyptic number.

66857230 is a deficient number, since it is larger than the sum of its proper divisors (64982258).

66857230 is a wasteful number, since it uses less digits than its factorization.

66857230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 66857230 is about 8176.6270552105. The cubic root of 66857230 is about 405.8661137314.

The spelling of 66857230 in words is "sixty-six million, eight hundred fifty-seven thousand, two hundred thirty".