66992256 has 48 divisors (see below), whose sum is σ = 192780510. Its totient is φ = 22330368.

The previous prime is 66992243. The next prime is 66992267. The reversal of 66992256 is 65229966.

66992256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 66977856 + 14400 = 8184^2 + 120^2 .

It is a tau number, because it is divible by the number of its divisors (48).

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 5 ways as a sum of consecutive naturals, for example, 27925 + ... + 30228.

Almost surely, 2^66992256 is an apocalyptic number.

It is an amenable number.

66992256 is an abundant number, since it is smaller than the sum of its proper divisors (125788254).

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

66992256 is a wasteful number, since it uses less digits than its factorization.

66992256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58173 (or 58158 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 66992256 is about 8184.8797181144. The cubic root of 66992256 is about 406.1391613678.

The spelling of 66992256 in words is "sixty-six million, nine hundred ninety-two thousand, two hundred fifty-six".