66275001 has 12 divisors (see below), whose sum is σ = 103094628. Its totient is φ = 40784544.

The previous prime is 66274991. The next prime is 66275017. The reversal of 66275001 is 10057266.

It can be written as a sum of positive squares in 2 ways, for example, as 6969600 + 59305401 = 2640^2 + 7701^2 .

It is not a de Polignac number, because 66275001 - 2⁵ = 66274969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66275071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283110 + ... + 283343.

It is an arithmetic number, because the mean of its divisors is an integer number (8591219).

Almost surely, 2^66275001 is an apocalyptic number.

It is an amenable number.

66275001 is a deficient number, since it is larger than the sum of its proper divisors (36819627).

66275001 is a wasteful number, since it uses less digits than its factorization.

66275001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566472 (or 566469 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 66275001 is about 8140.9459524063. The cubic root of 66275001 is about 404.6845096731.

It can be divided in two parts, 6627 and 5001, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 66275001 in words is "sixty-six million, two hundred seventy-five thousand, one".