94664681 has 2 divisors, whose sum is σ = 94664682. Its totient is φ = 94664680.

The previous prime is 94664677. The next prime is 94664701. The reversal of 94664681 is 18646649.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90421081 + 4243600 = 9509^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 94664681 - 2² = 94664677 is a prime.

It is a super-4 number, since 4×94664681⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (94664651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47332340 + 47332341.

It is an arithmetic number, because the mean of its divisors is an integer number (47332341).

Almost surely, 2^94664681 is an apocalyptic number.

It is an amenable number.

94664681 is a deficient number, since it is larger than the sum of its proper divisors (1).

94664681 is an equidigital number, since it uses as much as digits as its factorization.

94664681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 94664681 is about 9729.5776372872. The cubic root of 94664681 is about 455.7527787480.

The spelling of 94664681 in words is "ninety-four million, six hundred sixty-four thousand, six hundred eighty-one".