66360254 has 4 divisors (see below), whose sum is σ = 99540384. Its totient is φ = 33180126.

The previous prime is 66360251. The next prime is 66360317. The reversal of 66360254 is 45206366.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66360254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66360251) by changing a digit.

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 as a sum of consecutive naturals, namely, 16590062 + ... + 16590065.

It is an arithmetic number, because the mean of its divisors is an integer number (24885096).

Almost surely, 2^66360254 is an apocalyptic number.

66360254 is a deficient number, since it is larger than the sum of its proper divisors (33180130).

66360254 is a wasteful number, since it uses less digits than its factorization.

66360254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33180129.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66360254 is about 8146.1803319102. The cubic root of 66360254 is about 404.8579576060.

The spelling of 66360254 in words is "sixty-six million, three hundred sixty thousand, two hundred fifty-four".