66253458 has 64 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 20160000.

The previous prime is 66253433. The next prime is 66253459. The reversal of 66253458 is 85435266.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66253459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263833 + ... + 264083.

It is an arithmetic number, because the mean of its divisors is an integer number (2262330).

Almost surely, 2^66253458 is an apocalyptic number.

66253458 is an abundant number, since it is smaller than the sum of its proper divisors (78535662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66253458 is a wasteful number, since it uses less digits than its factorization.

66253458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 172800, while the sum is 39.

The square root of 66253458 is about 8139.6227185294. The cubic root of 66253458 is about 404.6406567218.

The spelling of 66253458 in words is "sixty-six million, two hundred fifty-three thousand, four hundred fifty-eight".