66658053 has 48 divisors (see below), whose sum is σ = 114826880. Its totient is φ = 33644160.

The previous prime is 66658051. The next prime is 66658073. The reversal of 66658053 is 35085666.

It is not a de Polignac number, because 66658053 - 2¹ = 66658051 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66658051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93663 + ... + 94371.

Almost surely, 2^66658053 is an apocalyptic number.

It is an amenable number.

66658053 is a deficient number, since it is larger than the sum of its proper divisors (48168827).

66658053 is a wasteful number, since it uses less digits than its factorization.

66658053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 66658053 is about 8164.4383150343. The cubic root of 66658053 is about 405.4626689325.

The spelling of 66658053 in words is "sixty-six million, six hundred fifty-eight thousand, fifty-three".