77066770 has 32 divisors (see below), whose sum is σ = 154198080. Its totient is φ = 27493440.

The previous prime is 77066761. The next prime is 77066771. The reversal of 77066770 is 7766077.

It is not an unprimeable number, because it can be changed into a prime (77066771) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 780 + ... + 12439.

It is an arithmetic number, because the mean of its divisors is an integer number (4818690).

Almost surely, 2^77066770 is an apocalyptic number.

77066770 is an abundant number, since it is smaller than the sum of its proper divisors (77131310).

77066770 is a wasteful number, since it uses less digits than its factorization.

77066770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13290.

The product of its (nonzero) digits is 86436, while the sum is 40.

The square root of 77066770 is about 8778.7681368174. The cubic root of 77066770 is about 425.5550211161. Note that the first 3 decimals are identical.

The spelling of 77066770 in words is "seventy-seven million, sixty-six thousand, seven hundred seventy".