857779016 has 32 divisors (see below), whose sum is σ = 1696464000. Its totient is φ = 405481536.

The previous prime is 857778983. The next prime is 857779019. The reversal of 857779016 is 610977758.

It is not an unprimeable number, because it can be changed into a prime (857779019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71825 + ... + 82911.

It is an arithmetic number, because the mean of its divisors is an integer number (53014500).

Almost surely, 2^857779016 is an apocalyptic number.

It is an amenable number.

857779016 is a deficient number, since it is larger than the sum of its proper divisors (838684984).

857779016 is a wasteful number, since it uses less digits than its factorization.

857779016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621 (or 11617 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 857779016 is about 29287.8646541533. The cubic root of 857779016 is about 950.1491976199.

The spelling of 857779016 in words is "eight hundred fifty-seven million, seven hundred seventy-nine thousand, sixteen".