768775849 has 4 divisors (see below), whose sum is σ = 770436736. Its totient is φ = 767114964.

The previous prime is 768775837. The next prime is 768775873. The reversal of 768775849 is 948577867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948577867 = 83 ⋅11428649.

It is a cyclic number.

It is not a de Polignac number, because 768775849 - 2¹⁷ = 768644777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768773849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829749 + ... + 830674.

It is an arithmetic number, because the mean of its divisors is an integer number (192609184).

Almost surely, 2^768775849 is an apocalyptic number.

It is an amenable number.

768775849 is a deficient number, since it is larger than the sum of its proper divisors (1660887).

768775849 is a wasteful number, since it uses less digits than its factorization.

768775849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660886.

The product of its digits is 23708160, while the sum is 61.

The square root of 768775849 is about 27726.8074072728. The cubic root of 768775849 is about 916.0796671332.

The spelling of 768775849 in words is "seven hundred sixty-eight million, seven hundred seventy-five thousand, eight hundred forty-nine".