66355026 has 16 divisors (see below), whose sum is σ = 132922944. Its totient is φ = 22082864.

The previous prime is 66355019. The next prime is 66355027. The reversal of 66355026 is 62055366.

It is not an unprimeable number, because it can be changed into a prime (66355027) 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, 4665 + ... + 12428.

It is an arithmetic number, because the mean of its divisors is an integer number (8307684).

Almost surely, 2^66355026 is an apocalyptic number.

66355026 is an abundant number, since it is smaller than the sum of its proper divisors (66567918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66355026 is a wasteful number, since it uses less digits than its factorization.

66355026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 66355026 is about 8145.8594390034. The cubic root of 66355026 is about 404.8473254738.

The spelling of 66355026 in words is "sixty-six million, three hundred fifty-five thousand, twenty-six".