66453454 has 4 divisors (see below), whose sum is σ = 99680184. Its totient is φ = 33226726.

The previous prime is 66453451. The next prime is 66453473. The reversal of 66453454 is 45435466.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 16613362 + ... + 16613365.

It is an arithmetic number, because the mean of its divisors is an integer number (24920046).

Almost surely, 2^66453454 is an apocalyptic number.

66453454 is a deficient number, since it is larger than the sum of its proper divisors (33226730).

66453454 is a wasteful number, since it uses less digits than its factorization.

66453454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33226729.

The product of its digits is 172800, while the sum is 37.

The square root of 66453454 is about 8151.8987972128. The cubic root of 66453454 is about 405.0474038909.

The spelling of 66453454 in words is "sixty-six million, four hundred fifty-three thousand, four hundred fifty-four".