66434372 has 6 divisors (see below), whose sum is σ = 116260158. Its totient is φ = 33217184.

The previous prime is 66434369. The next prime is 66434443. The reversal of 66434372 is 27343466.

It can be written as a sum of positive squares in only one way, i.e., 56040196 + 10394176 = 7486^2 + 3224^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8304293 + ... + 8304300.

It is an arithmetic number, because the mean of its divisors is an integer number (19376693).

Almost surely, 2^66434372 is an apocalyptic number.

It is an amenable number.

66434372 is a deficient number, since it is larger than the sum of its proper divisors (49825786).

66434372 is a wasteful number, since it uses less digits than its factorization.

66434372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16608597 (or 16608595 counting only the distinct ones).

The product of its digits is 72576, while the sum is 35.

The square root of 66434372 is about 8150.7283110161. The cubic root of 66434372 is about 405.0086306142.

The spelling of 66434372 in words is "sixty-six million, four hundred thirty-four thousand, three hundred seventy-two".