84668961 has 16 divisors (see below), whose sum is σ = 123119360. Its totient is φ = 51442560.

The previous prime is 84668929. The next prime is 84668971. The reversal of 84668961 is 16986648.

It is not a de Polignac number, because 84668961 - 2⁵ = 84668929 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84668961.

It is not an unprimeable number, because it can be changed into a prime (84668971) 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, 10660 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (7694960).

Almost surely, 2^84668961 is an apocalyptic number.

It is an amenable number.

84668961 is a deficient number, since it is larger than the sum of its proper divisors (38450399).

84668961 is a wasteful number, since it uses less digits than its factorization.

84668961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27576.

The product of its digits is 497664, while the sum is 48.

The square root of 84668961 is about 9201.5738327745. The cubic root of 84668961 is about 439.1114316299. Note that the first 3 decimals are identical.

The spelling of 84668961 in words is "eighty-four million, six hundred sixty-eight thousand, nine hundred sixty-one".