66051256 has 16 divisors (see below), whose sum is σ = 131131440. Its totient is φ = 31082880.

The previous prime is 66051221. The next prime is 66051257. The reversal of 66051256 is 65215066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66051257) 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, 242700 + ... + 242971.

It is an arithmetic number, because the mean of its divisors is an integer number (8195715).

Almost surely, 2^66051256 is an apocalyptic number.

It is an amenable number.

66051256 is a deficient number, since it is larger than the sum of its proper divisors (65080184).

66051256 is a wasteful number, since it uses less digits than its factorization.

66051256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485694 (or 485690 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 66051256 is about 8127.1923811363. The cubic root of 66051256 is about 404.2285900421.

The spelling of 66051256 in words is "sixty-six million, fifty-one thousand, two hundred fifty-six".