66254120 has 32 divisors (see below), whose sum is σ = 149303520. Its totient is φ = 26460480.

The previous prime is 66254107. The next prime is 66254131. The reversal of 66254120 is 2145266.

It is a self number, because there is not a number n which added to its sum of digits gives 66254120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50675 + ... + 51965.

It is an arithmetic number, because the mean of its divisors is an integer number (4665735).

Almost surely, 2^66254120 is an apocalyptic number.

It is an amenable number.

66254120 is an abundant number, since it is smaller than the sum of its proper divisors (83049400).

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

66254120 is a wasteful number, since it uses less digits than its factorization.

66254120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2581 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66254120 is about 8139.6633837033. The cubic root of 66254120 is about 404.6420044312.

Adding to 66254120 its reverse (2145266), we get a palindrome (68399386).

The spelling of 66254120 in words is "sixty-six million, two hundred fifty-four thousand, one hundred twenty".