66430255 has 8 divisors (see below), whose sum is σ = 79779024. Its totient is φ = 53102400.

The previous prime is 66430249. The next prime is 66430261. The reversal of 66430255 is 55203466.

It is an interprime number because it is at equal distance from previous prime (66430249) and next prime (66430261).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66430255 - 2⁹ = 66429743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2920 + ... + 11890.

It is an arithmetic number, because the mean of its divisors is an integer number (9972378).

Almost surely, 2^66430255 is an apocalyptic number.

66430255 is a deficient number, since it is larger than the sum of its proper divisors (13348769).

66430255 is a wasteful number, since it uses less digits than its factorization.

66430255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 66430255 is about 8150.4757529852. The cubic root of 66430255 is about 405.0002641872. Note that the first 3 decimals are identical.

The spelling of 66430255 in words is "sixty-six million, four hundred thirty thousand, two hundred fifty-five".