20466697 has 2 divisors, whose sum is σ = 20466698. Its totient is φ = 20466696.

The previous prime is 20466689. The next prime is 20466701. The reversal of 20466697 is 79666402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20466576 + 121 = 4524^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466697 - 2³ = 20466689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20466617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233348 + 10233349.

It is an arithmetic number, because the mean of its divisors is an integer number (10233349).

Almost surely, 2^20466697 is an apocalyptic number.

It is an amenable number.

20466697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466697 is an equidigital number, since it uses as much as digits as its factorization.

20466697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 20466697 is about 4524.0133731014. The cubic root of 20466697 is about 273.5368995486.

The spelling of 20466697 in words is "twenty million, four hundred sixty-six thousand, six hundred ninety-seven".