77074109 has 12 divisors (see below), whose sum is σ = 89919324. Its totient is φ = 65870784.

The previous prime is 77074099. The next prime is 77074111. The reversal of 77074109 is 90147077.

It can be written as a sum of positive squares in 2 ways, for example, as 56625625 + 20448484 = 7525^2 + 4522^2 .

It is not a de Polignac number, because 77074109 - 2⁸ = 77073853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77074169) 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 11 ways as a sum of consecutive naturals, for example, 16169 + ... + 20385.

It is an arithmetic number, because the mean of its divisors is an integer number (7493277).

Almost surely, 2^77074109 is an apocalyptic number.

It is an amenable number.

77074109 is a deficient number, since it is larger than the sum of its proper divisors (12845215).

77074109 is a wasteful number, since it uses less digits than its factorization.

77074109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604 (or 4597 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 77074109 is about 8779.1861240094. The cubic root of 77074109 is about 425.5685290961.

The spelling of 77074109 in words is "seventy-seven million, seventy-four thousand, one hundred nine".