885717121 has 3 divisors (see below), whose sum is σ = 885746883.
Its totient is φ = 885687360.
The previous prime is 885717073. The next prime is 885717163. The reversal of 885717121 is 121717588.
The square root of 885717121 is 29761.
It is a perfect power (a square), and thus also a powerful number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It can be written as a sum of positive squares in only one way, i.e., 137147521 + 748569600 = 11711^2 + 27360^2
It is not a de Polignac number, because 885717121 - 229 = 348846209 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (885714121) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14881 + ... + 44641.
It is an arithmetic number, because the mean of its divisors is an integer number (295248961).
Almost surely, 2885717121 is an apocalyptic number.
885717121 is the 29761-st square number.
885717121 is the 14881-st centered octagonal number.
It is an amenable number.
885717121 is a deficient number, since it is larger than the sum of its proper divisors (29762).
885717121 is an frugal number, since it uses more digits than its factorization.
885717121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 59522 (or 29761 counting only the distinct ones).
The product of its digits is 31360, while the sum is 40.
The cubic root of 885717121 is about 960.3547303799.
The spelling of 885717121 in words is "eight hundred eighty-five million, seven hundred seventeen thousand, one hundred twenty-one".