66714256 has 80 divisors (see below), whose sum is σ = 160811136. Its totient is φ = 26155008.

The previous prime is 66714253. The next prime is 66714269. The reversal of 66714256 is 65241766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (66714251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69975 + ... + 70921.

Almost surely, 2^66714256 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 66714256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80405568).

66714256 is an abundant number, since it is smaller than the sum of its proper divisors (94096880).

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

66714256 is a wasteful number, since it uses less digits than its factorization.

66714256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1010 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 66714256 is about 8167.8795289843. The cubic root of 66714256 is about 405.5765927357.

The spelling of 66714256 in words is "sixty-six million, seven hundred fourteen thousand, two hundred fifty-six".