778601 has 8 divisors (see below), whose sum is σ = 839520. Its totient is φ = 719712.

The previous prime is 778597. The next prime is 778633. The reversal of 778601 is 106877.

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 778601 - 2² = 778597 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 (778681) 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, 341 + ... + 1293.

It is an arithmetic number, because the mean of its divisors is an integer number (104940).

2⁷⁷⁸⁶⁰¹ is an apocalyptic number.

It is an amenable number.

778601 is a deficient number, since it is larger than the sum of its proper divisors (60919).

778601 is a wasteful number, since it uses less digits than its factorization.

778601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 778601 is about 882.3837033853. The cubic root of 778601 is about 91.9965735964.

The spelling of 778601 in words is "seven hundred seventy-eight thousand, six hundred one".