966664841 has 2 divisors, whose sum is σ = 966664842. Its totient is φ = 966664840.

The previous prime is 966664837. The next prime is 966664871. The reversal of 966664841 is 148466669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559795600 + 406869241 = 23660^2 + 20171^2 .

It is a cyclic number.

It is not a de Polignac number, because 966664841 - 2² = 966664837 is a prime.

It is a super-3 number, since 3×966664841³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 966664841.

It is not a weakly prime, because it can be changed into another prime (966664871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483332420 + 483332421.

It is an arithmetic number, because the mean of its divisors is an integer number (483332421).

Almost surely, 2^966664841 is an apocalyptic number.

It is an amenable number.

966664841 is a deficient number, since it is larger than the sum of its proper divisors (1).

966664841 is an equidigital number, since it uses as much as digits as its factorization.

966664841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 966664841 is about 31091.2341504804. The cubic root of 966664841 is about 988.7624713151.

The spelling of 966664841 in words is "nine hundred sixty-six million, six hundred sixty-four thousand, eight hundred forty-one".