66024253 has 4 divisors (see below), whose sum is σ = 66047040. Its totient is φ = 66001468.

The previous prime is 66024251. The next prime is 66024319. The reversal of 66024253 is 35242066.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35242066 = 2 ⋅17621033.

It is a cyclic number.

It is not a de Polignac number, because 66024253 - 2¹ = 66024251 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 (66024251) 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, 6283 + ... + 13096.

It is an arithmetic number, because the mean of its divisors is an integer number (16511760).

Almost surely, 2^66024253 is an apocalyptic number.

It is an amenable number.

66024253 is a deficient number, since it is larger than the sum of its proper divisors (22787).

66024253 is a wasteful number, since it uses less digits than its factorization.

66024253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22786.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 66024253 is about 8125.5309364989. The cubic root of 66024253 is about 404.1734971083.

The spelling of 66024253 in words is "sixty-six million, twenty-four thousand, two hundred fifty-three".