66273747 has 8 divisors (see below), whose sum is σ = 88563600. Its totient is φ = 44083200.

The previous prime is 66273737. The next prime is 66273751. The reversal of 66273747 is 74737266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66273747 - 2⁸ = 66273491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66273699 and 66273708.

It is not an unprimeable number, because it can be changed into a prime (66273737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23254 + ... + 25947.

It is an arithmetic number, because the mean of its divisors is an integer number (11070450).

Almost surely, 2^66273747 is an apocalyptic number.

66273747 is a deficient number, since it is larger than the sum of its proper divisors (22289853).

66273747 is a wasteful number, since it uses less digits than its factorization.

66273747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49653.

The product of its digits is 296352, while the sum is 42.

The square root of 66273747 is about 8140.8689339652. The cubic root of 66273747 is about 404.6819572901.

The spelling of 66273747 in words is "sixty-six million, two hundred seventy-three thousand, seven hundred forty-seven".