66303453 has 4 divisors (see below), whose sum is σ = 88404608. Its totient is φ = 44202300.

The previous prime is 66303449. The next prime is 66303467. The reversal of 66303453 is 35430366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66303453 - 2² = 66303449 is a prime.

It is a super-2 number, since 2×66303453² = 8792295759446418, which contains 22 as substring.

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 66303453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66303473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11050573 + ... + 11050578.

It is an arithmetic number, because the mean of its divisors is an integer number (22101152).

Almost surely, 2^66303453 is an apocalyptic number.

It is an amenable number.

66303453 is a deficient number, since it is larger than the sum of its proper divisors (22101155).

66303453 is a wasteful number, since it uses less digits than its factorization.

66303453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22101154.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 66303453 is about 8142.6932276735. The cubic root of 66303453 is about 404.7424120306.

The spelling of 66303453 in words is "sixty-six million, three hundred three thousand, four hundred fifty-three".