66488455 has 16 divisors (see below), whose sum is σ = 88343424. Its totient is φ = 47630880.

The previous prime is 66488453. The next prime is 66488489. The reversal of 66488455 is 55488466.

It is not a de Polignac number, because 66488455 - 2¹ = 66488453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66488453) 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, 5337 + ... + 12706.

It is an arithmetic number, because the mean of its divisors is an integer number (5521464).

Almost surely, 2^66488455 is an apocalyptic number.

66488455 is a deficient number, since it is larger than the sum of its proper divisors (21854969).

66488455 is a wasteful number, since it uses less digits than its factorization.

66488455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18126.

The product of its digits is 921600, while the sum is 46.

The square root of 66488455 is about 8154.0453150568. The cubic root of 66488455 is about 405.1185041626.

The spelling of 66488455 in words is "sixty-six million, four hundred eighty-eight thousand, four hundred fifty-five".