948666857 has 8 divisors (see below), whose sum is σ = 954181800. Its totient is φ = 943165440.

The previous prime is 948666811. The next prime is 948666877. The reversal of 948666857 is 758666849.

It can be written as a sum of positive squares in 4 ways, for example, as 113976976 + 834689881 = 10676^2 + 28891^2 .

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 948666857 - 2¹⁶ = 948601321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 948666796 and 948666805.

It is not an unprimeable number, because it can be changed into a prime (948666877) 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, 159269 + ... + 165117.

It is an arithmetic number, because the mean of its divisors is an integer number (119272725).

Almost surely, 2^948666857 is an apocalyptic number.

It is an amenable number.

948666857 is a deficient number, since it is larger than the sum of its proper divisors (5514943).

948666857 is a wasteful number, since it uses less digits than its factorization.

948666857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763.

The product of its digits is 17418240, while the sum is 59.

The square root of 948666857 is about 30800.4359871739. The cubic root of 948666857 is about 982.5875175792.

The spelling of 948666857 in words is "nine hundred forty-eight million, six hundred sixty-six thousand, eight hundred fifty-seven".