857670750989 has 8 divisors (see below), whose sum is σ = 953440438272. Its totient is φ = 766157494320.

The previous prime is 857670750961. The next prime is 857670750991. The reversal of 857670750989 is 989057076758.

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 857670750989 - 2²⁸ = 857402315533 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 (857670750919) 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, 1064107229 + ... + 1064108034.

It is an arithmetic number, because the mean of its divisors is an integer number (119180054784).

Almost surely, 2^857670750989 is an apocalyptic number.

It is an amenable number.

857670750989 is a deficient number, since it is larger than the sum of its proper divisors (95769687283).

857670750989 is a wasteful number, since it uses less digits than its factorization.

857670750989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128215307.

The product of its (nonzero) digits is 266716800, while the sum is 71.

The spelling of 857670750989 in words is "eight hundred fifty-seven billion, six hundred seventy million, seven hundred fifty thousand, nine hundred eighty-nine".