77066905 has 8 divisors (see below), whose sum is σ = 96501312. Its totient is φ = 58972848.

The previous prime is 77066881. The next prime is 77066917. The reversal of 77066905 is 50966077.

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

It is a cyclic number.

It is not a de Polignac number, because 77066905 - 2⁹ = 77066393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334959 + ... + 335188.

It is an arithmetic number, because the mean of its divisors is an integer number (12062664).

Almost surely, 2^77066905 is an apocalyptic number.

It is an amenable number.

77066905 is a deficient number, since it is larger than the sum of its proper divisors (19434407).

77066905 is a wasteful number, since it uses less digits than its factorization.

77066905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670175.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 77066905 is about 8778.7758258199. The cubic root of 77066905 is about 425.5552696014. Note that the first 3 decimals are identical.

The spelling of 77066905 in words is "seventy-seven million, sixty-six thousand, nine hundred five".