76834809 has 6 divisors (see below), whose sum is σ = 110983626. Its totient is φ = 51223200.

The previous prime is 76834799. The next prime is 76834811. The reversal of 76834809 is 90843867.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44515584 + 32319225 = 6672^2 + 5685^2 .

It is not a de Polignac number, because 76834809 - 2⁸ = 76834553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76834859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4268592 + ... + 4268609.

It is an arithmetic number, because the mean of its divisors is an integer number (18497271).

Almost surely, 2^76834809 is an apocalyptic number.

It is an amenable number.

76834809 is a deficient number, since it is larger than the sum of its proper divisors (34148817).

76834809 is a wasteful number, since it uses less digits than its factorization.

76834809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8537207 (or 8537204 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 76834809 is about 8765.5467028589. The cubic root of 76834809 is about 425.1276368658.

The spelling of 76834809 in words is "seventy-six million, eight hundred thirty-four thousand, eight hundred nine".