778349 has 8 divisors (see below), whose sum is σ = 914592. Its totient is φ = 653040.

The previous prime is 778333. The next prime is 778357. The reversal of 778349 is 943877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 778349 - 2⁴ = 778333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778319) 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 7 ways as a sum of consecutive naturals, for example, 2579 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (114324).

2⁷⁷⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

778349 is a deficient number, since it is larger than the sum of its proper divisors (136243).

778349 is a wasteful number, since it uses less digits than its factorization.

778349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467.

The product of its digits is 42336, while the sum is 38.

The square root of 778349 is about 882.2408968077. The cubic root of 778349 is about 91.9866474005.

The spelling of 778349 in words is "seven hundred seventy-eight thousand, three hundred forty-nine".