66836273 has 16 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 55536000.

The previous prime is 66836269. The next prime is 66836311. The reversal of 66836273 is 37263866.

It is a cyclic number.

It is not a de Polignac number, because 66836273 - 2² = 66836269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 66836273.

It is not an unprimeable number, because it can be changed into a prime (66830273) 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, 50723 + ... + 52023.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^66836273 is an apocalyptic number.

It is an amenable number.

66836273 is a deficient number, since it is larger than the sum of its proper divisors (11908687).

66836273 is a wasteful number, since it uses less digits than its factorization.

66836273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its digits is 217728, while the sum is 41.

The square root of 66836273 is about 8175.3454361268. The cubic root of 66836273 is about 405.8237018385.

The spelling of 66836273 in words is "sixty-six million, eight hundred thirty-six thousand, two hundred seventy-three".