66325453 has 4 divisors (see below), whose sum is σ = 66469788. Its totient is φ = 66181120.

The previous prime is 66325451. The next prime is 66325471. The reversal of 66325453 is 35452366.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8838729 + 57486724 = 2973^2 + 7582^2 .

It is a cyclic number.

It is not a de Polignac number, because 66325453 - 2¹ = 66325451 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 (66325451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71476 + ... + 72397.

It is an arithmetic number, because the mean of its divisors is an integer number (16617447).

Almost surely, 2^66325453 is an apocalyptic number.

It is an amenable number.

66325453 is a deficient number, since it is larger than the sum of its proper divisors (144335).

66325453 is a wasteful number, since it uses less digits than its factorization.

66325453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144334.

The product of its digits is 64800, while the sum is 34.

The square root of 66325453 is about 8144.0440200186. The cubic root of 66325453 is about 404.7871726376.

The spelling of 66325453 in words is "sixty-six million, three hundred twenty-five thousand, four hundred fifty-three".