66077222 has 8 divisors (see below), whose sum is σ = 99359400. Its totient is φ = 32957424.

The previous prime is 66077189. The next prime is 66077233. The reversal of 66077222 is 22277066.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39572 + ... + 41207.

It is an arithmetic number, because the mean of its divisors is an integer number (12419925).

Almost surely, 2^66077222 is an apocalyptic number.

66077222 is a deficient number, since it is larger than the sum of its proper divisors (33282178).

66077222 is a wasteful number, since it uses less digits than its factorization.

66077222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81190.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 66077222 is about 8128.7897008103. The cubic root of 66077222 is about 404.2815530746.

The spelling of 66077222 in words is "sixty-six million, seventy-seven thousand, two hundred twenty-two".