20466497 has 2 divisors, whose sum is σ = 20466498. Its totient is φ = 20466496.

The previous prime is 20466493. The next prime is 20466577. The reversal of 20466497 is 79466402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 7187761 = 3644^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466497 - 2² = 20466493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20466497.

It is not a weakly prime, because it can be changed into another prime (20466493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233248 + 10233249.

It is an arithmetic number, because the mean of its divisors is an integer number (10233249).

Almost surely, 2^20466497 is an apocalyptic number.

It is an amenable number.

20466497 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466497 is an equidigital number, since it uses as much as digits as its factorization.

20466497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 20466497 is about 4523.9912687803. The cubic root of 20466497 is about 273.5360085473.

The spelling of 20466497 in words is "twenty million, four hundred sixty-six thousand, four hundred ninety-seven".