196664969 has 2 divisors, whose sum is σ = 196664970. Its totient is φ = 196664968.

The previous prime is 196664957. The next prime is 196664981. The reversal of 196664969 is 969466691.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (196664957) and next prime (196664981).

It can be written as a sum of positive squares in only one way, i.e., 140114569 + 56550400 = 11837^2 + 7520^2 .

It is a cyclic number.

It is not a de Polignac number, because 196664969 - 2¹² = 196660873 is a prime.

It is a super-2 number, since 2×196664969² = 77354220063541922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196666969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98332484 + 98332485.

It is an arithmetic number, because the mean of its divisors is an integer number (98332485).

Almost surely, 2^196664969 is an apocalyptic number.

It is an amenable number.

196664969 is a deficient number, since it is larger than the sum of its proper divisors (1).

196664969 is an equidigital number, since it uses as much as digits as its factorization.

196664969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 56.

The square root of 196664969 is about 14023.7287837436. The cubic root of 196664969 is about 581.5347472291.

The spelling of 196664969 in words is "one hundred ninety-six million, six hundred sixty-four thousand, nine hundred sixty-nine".