66123466 has 4 divisors (see below), whose sum is σ = 99185202. Its totient is φ = 33061732.

The previous prime is 66123443. The next prime is 66123479. The reversal of 66123466 is 66432166.

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., 65529025 + 594441 = 8095^2 + 771^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16530865 + ... + 16530868.

Almost surely, 2^66123466 is an apocalyptic number.

66123466 is a deficient number, since it is larger than the sum of its proper divisors (33061736).

66123466 is a wasteful number, since it uses less digits than its factorization.

66123466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33061735.

The product of its digits is 31104, while the sum is 34.

The square root of 66123466 is about 8131.6336612024. The cubic root of 66123466 is about 404.3758429368.

The spelling of 66123466 in words is "sixty-six million, one hundred twenty-three thousand, four hundred sixty-six".