66161474 has 8 divisors (see below), whose sum is σ = 100153020. Its totient is φ = 32777136.

The previous prime is 66161461. The next prime is 66161483. The reversal of 66161474 is 47416166.

66161474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65044225 + 1117249 = 8065^2 + 1057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×66161474⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151529 + ... + 151964.

Almost surely, 2^66161474 is an apocalyptic number.

66161474 is a deficient number, since it is larger than the sum of its proper divisors (33991546).

66161474 is a wasteful number, since it uses less digits than its factorization.

66161474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303604.

The product of its digits is 24192, while the sum is 35.

The square root of 66161474 is about 8133.9703712271. The cubic root of 66161474 is about 404.4533069804.

The spelling of 66161474 in words is "sixty-six million, one hundred sixty-one thousand, four hundred seventy-four".