66453455 has 8 divisors (see below), whose sum is σ = 80534304. Its totient is φ = 52636000.

The previous prime is 66453451. The next prime is 66453473. The reversal of 66453455 is 55435466.

It is a happy number.

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

It is not a de Polignac number, because 66453455 - 2² = 66453451 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 (66453451) 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, 65291 + ... + 66300.

It is an arithmetic number, because the mean of its divisors is an integer number (10066788).

Almost surely, 2^66453455 is an apocalyptic number.

66453455 is a deficient number, since it is larger than the sum of its proper divisors (14080849).

66453455 is a wasteful number, since it uses less digits than its factorization.

66453455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131697.

The product of its digits is 216000, while the sum is 38.

The square root of 66453455 is about 8151.8988585482. The cubic root of 66453455 is about 405.0474059227.

The spelling of 66453455 in words is "sixty-six million, four hundred fifty-three thousand, four hundred fifty-five".