660135453 has 8 divisors (see below), whose sum is σ = 881203968. Its totient is φ = 439578624.

The previous prime is 660135451. The next prime is 660135479. The reversal of 660135453 is 354531066.

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

It is not a de Polignac number, because 660135453 - 2¹ = 660135451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660135451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124900 + ... + 130077.

It is an arithmetic number, because the mean of its divisors is an integer number (110150496).

Almost surely, 2^660135453 is an apocalyptic number.

It is an amenable number.

660135453 is a deficient number, since it is larger than the sum of its proper divisors (221068515).

660135453 is a wasteful number, since it uses less digits than its factorization.

660135453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255843.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 660135453 is about 25693.1012725206. The cubic root of 660135453 is about 870.7183273372.

The spelling of 660135453 in words is "six hundred sixty million, one hundred thirty-five thousand, four hundred fifty-three".