66427266 has 32 divisors (see below), whose sum is σ = 139668480. Its totient is φ = 21021264.

The previous prime is 66427261. The next prime is 66427271. The reversal of 66427266 is 66272466.

It is an interprime number because it is at equal distance from previous prime (66427261) and next prime (66427271).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66427261) 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, 17451 + ... + 20913.

It is an arithmetic number, because the mean of its divisors is an integer number (4364640).

Almost surely, 2^66427266 is an apocalyptic number.

66427266 is an abundant number, since it is smaller than the sum of its proper divisors (73241214).

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

66427266 is a wasteful number, since it uses less digits than its factorization.

66427266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630.

The product of its digits is 145152, while the sum is 39.

The square root of 66427266 is about 8150.2923873932. The cubic root of 66427266 is about 404.9941898267.

The spelling of 66427266 in words is "sixty-six million, four hundred twenty-seven thousand, two hundred sixty-six".