77805706 has 16 divisors (see below), whose sum is σ = 127644480. Its totient is φ = 35275680.

The previous prime is 77805701. The next prime is 77805713. The reversal of 77805706 is 60750877.

It is a super-3 number, since 3×77805706³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (77805701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (7977780).

Almost surely, 2^77805706 is an apocalyptic number.

77805706 is a deficient number, since it is larger than the sum of its proper divisors (49838774).

77805706 is a wasteful number, since it uses less digits than its factorization.

77805706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9069.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 77805706 is about 8820.7542761376. The cubic root of 77805706 is about 426.9108074048.

The spelling of 77805706 in words is "seventy-seven million, eight hundred five thousand, seven hundred six".