66701256 has 32 divisors (see below), whose sum is σ = 170633760. Its totient is φ = 21716352.

The previous prime is 66701231. The next prime is 66701273. The reversal of 66701256 is 65210766.

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, 31285 + ... + 33348.

It is an arithmetic number, because the mean of its divisors is an integer number (5332305).

Almost surely, 2^66701256 is an apocalyptic number.

It is an amenable number.

66701256 is an abundant number, since it is smaller than the sum of its proper divisors (103932504).

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

66701256 is a wasteful number, since it uses less digits than its factorization.

66701256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64685 (or 64681 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 66701256 is about 8167.0836900328. The cubic root of 66701256 is about 405.5502473510.

The spelling of 66701256 in words is "sixty-six million, seven hundred one thousand, two hundred fifty-six".