66050055 has 12 divisors (see below), whose sum is σ = 114486840. Its totient is φ = 35226672.

The previous prime is 66050053. The next prime is 66050059. The reversal of 66050055 is 55005066.

66050055 is a `hidden beast` number, since 6 + 605 + 0 + 0 + 55 = 666.

It is not a de Polignac number, because 66050055 - 2¹ = 66050053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 733845 + ... + 733934.

It is an arithmetic number, because the mean of its divisors is an integer number (9540570).

Almost surely, 2^66050055 is an apocalyptic number.

66050055 is a deficient number, since it is larger than the sum of its proper divisors (48436785).

66050055 is a wasteful number, since it uses less digits than its factorization.

66050055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467790 (or 1467787 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 66050055 is about 8127.1184930454. The cubic root of 66050055 is about 404.2261400181.

The spelling of 66050055 in words is "sixty-six million, fifty thousand, fifty-five".