76289805 has 12 divisors (see below), whose sum is σ = 132235740. Its totient is φ = 40687872.

The previous prime is 76289797. The next prime is 76289809. The reversal of 76289805 is 50898267.

It can be written as a sum of positive squares in 2 ways, for example, as 57471561 + 18818244 = 7581^2 + 4338^2 .

It is not a de Polignac number, because 76289805 - 2³ = 76289797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1695329 = 76289805 / (7 + 6 + 2 + 8 + 9 + 8 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76289809) 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 11 ways as a sum of consecutive naturals, for example, 847620 + ... + 847709.

It is an arithmetic number, because the mean of its divisors is an integer number (11019645).

Almost surely, 2^76289805 is an apocalyptic number.

It is an amenable number.

76289805 is a deficient number, since it is larger than the sum of its proper divisors (55945935).

76289805 is a wasteful number, since it uses less digits than its factorization.

76289805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695340 (or 1695337 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 76289805 is about 8734.4035285759. The cubic root of 76289805 is about 424.1200802794.

The spelling of 76289805 in words is "seventy-six million, two hundred eighty-nine thousand, eight hundred five".