66447134 has 16 divisors (see below), whose sum is σ = 108448368. Its totient is φ = 30350592.

The previous prime is 66447131. The next prime is 66447151. The reversal of 66447134 is 43174466.

It is a junction number, because it is equal to n+sod(n) for n = 66447094 and 66447103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66447131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10652 + ... + 15695.

It is an arithmetic number, because the mean of its divisors is an integer number (6778023).

Almost surely, 2^66447134 is an apocalyptic number.

66447134 is a deficient number, since it is larger than the sum of its proper divisors (42001234).

66447134 is a wasteful number, since it uses less digits than its factorization.

66447134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26459.

The product of its digits is 48384, while the sum is 35.

The square root of 66447134 is about 8151.5111482473. The cubic root of 66447134 is about 405.0345629193.

The spelling of 66447134 in words is "sixty-six million, four hundred forty-seven thousand, one hundred thirty-four".