869042661 has 8 divisors (see below), whose sum is σ = 1177719264. Its totient is φ = 569863920.

The previous prime is 869042651. The next prime is 869042663. The reversal of 869042661 is 166240968.

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

It is not a de Polignac number, because 869042661 - 2⁶ = 869042597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869042663) 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, 2374251 + ... + 2374616.

It is an arithmetic number, because the mean of its divisors is an integer number (147214908).

Almost surely, 2^869042661 is an apocalyptic number.

It is an amenable number.

869042661 is a deficient number, since it is larger than the sum of its proper divisors (308676603).

869042661 is a wasteful number, since it uses less digits than its factorization.

869042661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748931.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 869042661 is about 29479.5295247397. The cubic root of 869042661 is about 954.2899836609.

The spelling of 869042661 in words is "eight hundred sixty-nine million, forty-two thousand, six hundred sixty-one".