66103055 has 8 divisors (see below), whose sum is σ = 83989872. Its totient is φ = 49771648.

The previous prime is 66103049. The next prime is 66103057. The reversal of 66103055 is 55030166.

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

It is not a de Polignac number, because 66103055 - 2⁴ = 66103039 is a prime.

It is a super-2 number, since 2×66103055² = 8739227760666050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66103057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388757 + ... + 388926.

It is an arithmetic number, because the mean of its divisors is an integer number (10498734).

Almost surely, 2^66103055 is an apocalyptic number.

66103055 is a deficient number, since it is larger than the sum of its proper divisors (17886817).

66103055 is a wasteful number, since it uses less digits than its factorization.

66103055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777705.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 66103055 is about 8130.3785274734. The cubic root of 66103055 is about 404.3342310592.

The spelling of 66103055 in words is "sixty-six million, one hundred three thousand, fifty-five".