779801057 has 8 divisors (see below), whose sum is σ = 895726656. Its totient is φ = 665006832.

The previous prime is 779801051. The next prime is 779801081. The reversal of 779801057 is 750108977.

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

It is not a de Polignac number, because 779801057 - 2¹² = 779796961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 779800999 and 779801017.

It is not an unprimeable number, because it can be changed into a prime (779801051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281363 + ... + 284120.

It is an arithmetic number, because the mean of its divisors is an integer number (111965832).

Almost surely, 2^779801057 is an apocalyptic number.

It is an amenable number.

779801057 is a deficient number, since it is larger than the sum of its proper divisors (115925599).

779801057 is a wasteful number, since it uses less digits than its factorization.

779801057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565687.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 779801057 is about 27924.9182093699. The cubic root of 779801057 is about 920.4381407869.

The spelling of 779801057 in words is "seven hundred seventy-nine million, eight hundred one thousand, fifty-seven".