66051674 has 16 divisors (see below), whose sum is σ = 108714312. Its totient is φ = 29909568.

The previous prime is 66051659. The next prime is 66051679. The reversal of 66051674 is 47615066.

It can be written as a sum of positive squares in 4 ways, for example, as 52780225 + 13271449 = 7265^2 + 3643^2 .

It is not an unprimeable number, because it can be changed into a prime (66051679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22589 + ... + 25344.

Almost surely, 2^66051674 is an apocalyptic number.

66051674 is a deficient number, since it is larger than the sum of its proper divisors (42662638).

66051674 is a wasteful number, since it uses less digits than its factorization.

66051674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48001.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66051674 is about 8127.2180972335. The cubic root of 66051674 is about 404.2294427495.

The spelling of 66051674 in words is "sixty-six million, fifty-one thousand, six hundred seventy-four".