66254469 has 8 divisors (see below), whose sum is σ = 88391520. Its totient is φ = 44143536.

The previous prime is 66254453. The next prime is 66254477. The reversal of 66254469 is 96445266.

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

It is not a de Polignac number, because 66254469 - 2⁴ = 66254453 is a prime.

It is a super-2 number, since 2×66254469² = 8779309324943922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66254469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66250469) 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, 462 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (11048940).

Almost surely, 2^66254469 is an apocalyptic number.

It is an amenable number.

66254469 is a deficient number, since it is larger than the sum of its proper divisors (22137051).

66254469 is a wasteful number, since it uses less digits than its factorization.

66254469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13059.

The product of its digits is 311040, while the sum is 42.

The square root of 66254469 is about 8139.6848219080. The cubic root of 66254469 is about 404.6427149269.

The spelling of 66254469 in words is "sixty-six million, two hundred fifty-four thousand, four hundred sixty-nine".