66853485 has 16 divisors (see below), whose sum is σ = 118850880. Its totient is φ = 35655120.

The previous prime is 66853483. The next prime is 66853531. The reversal of 66853485 is 58435866.

It is not a de Polignac number, because 66853485 - 2¹ = 66853483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66853485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66853483) 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, 247471 + ... + 247740.

It is an arithmetic number, because the mean of its divisors is an integer number (7428180).

Almost surely, 2^66853485 is an apocalyptic number.

It is an amenable number.

66853485 is a deficient number, since it is larger than the sum of its proper divisors (51997395).

66853485 is a wasteful number, since it uses less digits than its factorization.

66853485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495225 (or 495219 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 66853485 is about 8176.3980455944. The cubic root of 66853485 is about 405.8585354088.

The spelling of 66853485 in words is "sixty-six million, eight hundred fifty-three thousand, four hundred eighty-five".