857120611 has 8 divisors (see below), whose sum is σ = 881460144. Its totient is φ = 833083680.

The previous prime is 857120489. The next prime is 857120629. The reversal of 857120611 is 116021758.

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

It is not a de Polignac number, because 857120611 - 2¹³ = 857112419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857120711) 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, 69900 + ... + 81241.

It is an arithmetic number, because the mean of its divisors is an integer number (110182518).

Almost surely, 2^857120611 is an apocalyptic number.

857120611 is a deficient number, since it is larger than the sum of its proper divisors (24339533).

857120611 is a wasteful number, since it uses less digits than its factorization.

857120611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151301.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 857120611 is about 29276.6222607732. The cubic root of 857120611 is about 949.9060335498.

The spelling of 857120611 in words is "eight hundred fifty-seven million, one hundred twenty thousand, six hundred eleven".