66704122 has 4 divisors (see below), whose sum is σ = 100056186. Its totient is φ = 33352060.

The previous prime is 66704101. The next prime is 66704149. The reversal of 66704122 is 22140766.

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

It can be written as a sum of positive squares in only one way, i.e., 49406841 + 17297281 = 7029^2 + 4159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16676029 + ... + 16676032.

Almost surely, 2^66704122 is an apocalyptic number.

66704122 is a deficient number, since it is larger than the sum of its proper divisors (33352064).

66704122 is a wasteful number, since it uses less digits than its factorization.

66704122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33352063.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 66704122 is about 8167.2591485761. The cubic root of 66704122 is about 405.5560557892.

Adding to 66704122 its reverse (22140766), we get a palindrome (88844888).

The spelling of 66704122 in words is "sixty-six million, seven hundred four thousand, one hundred twenty-two".