66026455 has 16 divisors (see below), whose sum is σ = 86615424. Its totient is φ = 47918880.

The previous prime is 66026449. The next prime is 66026459. The reversal of 66026455 is 55462066.

It is not a de Polignac number, because 66026455 - 2¹³ = 66018263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66026455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66026459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34432 + ... + 36298.

It is an arithmetic number, because the mean of its divisors is an integer number (5413464).

Almost surely, 2^66026455 is an apocalyptic number.

66026455 is a deficient number, since it is larger than the sum of its proper divisors (20588969).

66026455 is a wasteful number, since it uses less digits than its factorization.

66026455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 66026455 is about 8125.6664342071. Note that the first 3 decimals coincide. The cubic root of 66026455 is about 404.1779903064.

The spelling of 66026455 in words is "sixty-six million, twenty-six thousand, four hundred fifty-five".