853954661 has 8 divisors (see below), whose sum is σ = 976453824. Its totient is φ = 731581920.

The previous prime is 853954589. The next prime is 853954691. The reversal of 853954661 is 166459358.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853954661 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 (853954691) 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, 16655 + ... + 44556.

It is an arithmetic number, because the mean of its divisors is an integer number (122056728).

Almost surely, 2^853954661 is an apocalyptic number.

It is an amenable number.

853954661 is a deficient number, since it is larger than the sum of its proper divisors (122499163).

853954661 is a wasteful number, since it uses less digits than its factorization.

853954661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63211.

The product of its digits is 777600, while the sum is 47.

The square root of 853954661 is about 29222.5026477884. The cubic root of 853954661 is about 948.7350332864.

The spelling of 853954661 in words is "eight hundred fifty-three million, nine hundred fifty-four thousand, six hundred sixty-one".