66255396 has 12 divisors (see below), whose sum is σ = 154595952. Its totient is φ = 22085128.

The previous prime is 66255391. The next prime is 66255421. The reversal of 66255396 is 69355266.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (66255391) 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, 2760630 + ... + 2760653.

It is an arithmetic number, because the mean of its divisors is an integer number (12882996).

Almost surely, 2^66255396 is an apocalyptic number.

It is an amenable number.

66255396 is an abundant number, since it is smaller than the sum of its proper divisors (88340556).

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

66255396 is a wasteful number, since it uses less digits than its factorization.

66255396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521290 (or 5521288 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

The square root of 66255396 is about 8139.7417649456. The cubic root of 66255396 is about 404.6446021055.

It can be divided in two parts, 6625 and 5396, that added together give a palindrome (12021).

The spelling of 66255396 in words is "sixty-six million, two hundred fifty-five thousand, three hundred ninety-six".