66701053 has 4 divisors (see below), whose sum is σ = 67188060. Its totient is φ = 66214048.

The previous prime is 66701051. The next prime is 66701069. The reversal of 66701053 is 35010766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54715609 + 11985444 = 7397^2 + 3462^2 .

It is a cyclic number.

It is not a de Polignac number, because 66701053 - 2¹ = 66701051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66701051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243298 + ... + 243571.

It is an arithmetic number, because the mean of its divisors is an integer number (16797015).

Almost surely, 2^66701053 is an apocalyptic number.

It is an amenable number.

66701053 is a deficient number, since it is larger than the sum of its proper divisors (487007).

66701053 is a wasteful number, since it uses less digits than its factorization.

66701053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487006.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 66701053 is about 8167.0712620866. The cubic root of 66701053 is about 405.5498359305.

The spelling of 66701053 in words is "sixty-six million, seven hundred one thousand, fifty-three".