66006256 has 30 divisors (see below), whose sum is σ = 129965640. Its totient is φ = 32475168.

The previous prime is 66006221. The next prime is 66006263. The reversal of 66006256 is 65260066.

It is a super-2 number, since 2×66006256² = 8713651662275072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71365 + ... + 72283.

It is an arithmetic number, because the mean of its divisors is an integer number (4332188).

Almost surely, 2^66006256 is an apocalyptic number.

It is an amenable number.

66006256 is a deficient number, since it is larger than the sum of its proper divisors (63959384).

66006256 is an equidigital number, since it uses as much as digits as its factorization.

66006256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66006256 is about 8124.4234256961. The cubic root of 66006256 is about 404.1367703444.

The spelling of 66006256 in words is "sixty-six million, six thousand, two hundred fifty-six".