666272048 has 40 divisors (see below), whose sum is σ = 1404576768. Its totient is φ = 304330752.

The previous prime is 666271997. The next prime is 666272059. The reversal of 666272048 is 840272666.

It is a super-2 number, since 2×666272048² = 887836883892228608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666271996 and 666272014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3665 + ... + 36687.

Almost surely, 2^666272048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666272048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702288384).

666272048 is an abundant number, since it is smaller than the sum of its proper divisors (738304720).

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

666272048 is a wasteful number, since it uses less digits than its factorization.

666272048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33141 (or 33135 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 666272048 is about 25812.2460859182. The cubic root of 666272048 is about 873.4080651367.

The spelling of 666272048 in words is "six hundred sixty-six million, two hundred seventy-two thousand, forty-eight".