66360055 has 8 divisors (see below), whose sum is σ = 81784512. Its totient is φ = 51653088.

The previous prime is 66360053. The next prime is 66360067. The reversal of 66360055 is 55006366.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66360055 - 2¹ = 66360053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66359999 and 66360026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66360053) 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 in 7 ways as a sum of consecutive naturals, for example, 179167 + ... + 179536.

It is an arithmetic number, because the mean of its divisors is an integer number (10223064).

Almost surely, 2^66360055 is an apocalyptic number.

66360055 is a deficient number, since it is larger than the sum of its proper divisors (15424457).

66360055 is a wasteful number, since it uses less digits than its factorization.

66360055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358745.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 66360055 is about 8146.1681175876. The cubic root of 66360055 is about 404.8575529119.

The spelling of 66360055 in words is "sixty-six million, three hundred sixty thousand, fifty-five".