66451162 has 4 divisors (see below), whose sum is σ = 99676746. Its totient is φ = 33225580.

The previous prime is 66451159. The next prime is 66451183. The reversal of 66451162 is 26115466.

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., 46389721 + 20061441 = 6811^2 + 4479^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16612789 + ... + 16612792.

Almost surely, 2^66451162 is an apocalyptic number.

66451162 is a deficient number, since it is larger than the sum of its proper divisors (33225584).

66451162 is a wasteful number, since it uses less digits than its factorization.

66451162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33225583.

The product of its digits is 8640, while the sum is 31.

The square root of 66451162 is about 8151.7582152564. The cubic root of 66451162 is about 405.0427471010.

The spelling of 66451162 in words is "sixty-six million, four hundred fifty-one thousand, one hundred sixty-two".