8851661 has 16 divisors (see below), whose sum is σ = 10969728. Its totient is φ = 6955200.

The previous prime is 8851657. The next prime is 8851669. The reversal of 8851661 is 1661588.

It is not a de Polignac number, because 8851661 - 2² = 8851657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8851669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18971 + ... + 19431.

It is an arithmetic number, because the mean of its divisors is an integer number (685608).

Almost surely, 2^8851661 is an apocalyptic number.

It is an amenable number.

8851661 is a deficient number, since it is larger than the sum of its proper divisors (2118067).

8851661 is a wasteful number, since it uses less digits than its factorization.

8851661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its digits is 11520, while the sum is 35.

The square root of 8851661 is about 2975.1741125521. The cubic root of 8851661 is about 206.8592398006.

The spelling of 8851661 in words is "eight million, eight hundred fifty-one thousand, six hundred sixty-one".