66273201 has 16 divisors (see below), whose sum is σ = 98656320. Its totient is φ = 43968960.

The previous prime is 66273127. The next prime is 66273203. The reversal of 66273201 is 10237266.

It is a happy number.

66273201 is a `hidden beast` number, since 6 + 627 + 32 + 0 + 1 = 666.

It is not a de Polignac number, because 66273201 - 2¹³ = 66265009 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (66273203) 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, 120 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (6166020).

Almost surely, 2^66273201 is an apocalyptic number.

It is an amenable number.

66273201 is a deficient number, since it is larger than the sum of its proper divisors (32383119).

66273201 is a wasteful number, since it uses less digits than its factorization.

66273201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11853 (or 11847 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 66273201 is about 8140.8353993924. The cubic root of 66273201 is about 404.6808459553.

The spelling of 66273201 in words is "sixty-six million, two hundred seventy-three thousand, two hundred one".