66074053 has 4 divisors (see below), whose sum is σ = 69960780. Its totient is φ = 62187328.

The previous prime is 66074027. The next prime is 66074069. The reversal of 66074053 is 35047066.

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 55621764 + 10452289 = 7458^2 + 3233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66074053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66074003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943338 + ... + 1943371.

It is an arithmetic number, because the mean of its divisors is an integer number (17490195).

Almost surely, 2^66074053 is an apocalyptic number.

It is an amenable number.

66074053 is a deficient number, since it is larger than the sum of its proper divisors (3886727).

66074053 is a wasteful number, since it uses less digits than its factorization.

66074053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886726.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 66074053 is about 8128.5947740061. The cubic root of 66074053 is about 404.2750899865.

The spelling of 66074053 in words is "sixty-six million, seventy-four thousand, fifty-three".