77066 has 16 divisors (see below), whose sum is σ = 131328. Its totient is φ = 33600.

The previous prime is 77047. The next prime is 77069. The reversal of 77066 is 66077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (8208).

2⁷⁷⁰⁶⁶ is an apocalyptic number.

77066 is a deficient number, since it is larger than the sum of its proper divisors (54262).

77066 is a wasteful number, since it uses less digits than its factorization.

77066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 77066 is about 277.6076367826. The cubic root of 77066 is about 42.5553603824. Note that the first 3 decimals are identical.

The spelling of 77066 in words is "seventy-seven thousand, sixty-six".