80769609 has 32 divisors (see below), whose sum is σ = 124248960. Its totient is φ = 51819264.

The previous prime is 80769607. The next prime is 80769649. The reversal of 80769609 is 90696708.

It is not a de Polignac number, because 80769609 - 2¹ = 80769607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80769607) 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 31 ways as a sum of consecutive naturals, for example, 84277 + ... + 85229.

It is an arithmetic number, because the mean of its divisors is an integer number (3882780).

Almost surely, 2^80769609 is an apocalyptic number.

It is an amenable number.

80769609 is a deficient number, since it is larger than the sum of its proper divisors (43479351).

80769609 is a wasteful number, since it uses less digits than its factorization.

80769609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 80769609 is about 8987.1913855220. The cubic root of 80769609 is about 432.2642576859.

It can be divided in two parts, 80769 and 609, that multiplied together give a triangular number (49188321 = T₉₉₁₈).

The spelling of 80769609 in words is "eighty million, seven hundred sixty-nine thousand, six hundred nine".