77755066 has 16 divisors (see below), whose sum is σ = 117804960. Its totient is φ = 38489040.

The previous prime is 77755057. The next prime is 77755079. The reversal of 77755066 is 66055777.

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 7 ways as a sum of consecutive naturals, for example, 125305 + ... + 125923.

It is an arithmetic number, because the mean of its divisors is an integer number (7362810).

Almost surely, 2^77755066 is an apocalyptic number.

77755066 is a deficient number, since it is larger than the sum of its proper divisors (40049894).

77755066 is a wasteful number, since it uses less digits than its factorization.

77755066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 308700, while the sum is 43.

The square root of 77755066 is about 8817.8833061002. The cubic root of 77755066 is about 426.8181687185.

The spelling of 77755066 in words is "seventy-seven million, seven hundred fifty-five thousand, sixty-six".