66192274 has 4 divisors (see below), whose sum is σ = 99288414. Its totient is φ = 33096136.

The previous prime is 66192263. The next prime is 66192281. The reversal of 66192274 is 47229166.

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., 56625625 + 9566649 = 7525^2 + 3093^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16548067 + ... + 16548070.

Almost surely, 2^66192274 is an apocalyptic number.

66192274 is a deficient number, since it is larger than the sum of its proper divisors (33096140).

66192274 is a wasteful number, since it uses less digits than its factorization.

66192274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33096139.

The product of its digits is 36288, while the sum is 37.

The square root of 66192274 is about 8135.8634452650. The cubic root of 66192274 is about 404.5160586522.

It can be divided in two parts, 66192 and 274, that added together give a palindrome (66466).

The spelling of 66192274 in words is "sixty-six million, one hundred ninety-two thousand, two hundred seventy-four".