20700469 has 2 divisors, whose sum is σ = 20700470. Its totient is φ = 20700468.

The previous prime is 20700457. The next prime is 20700503. The reversal of 20700469 is 96400702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16851025 + 3849444 = 4105^2 + 1962^2 .

It is a cyclic number.

It is not a de Polignac number, because 20700469 - 2⁷ = 20700341 is a prime.

It is a super-2 number, since 2×20700469² = 857018833639922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20700269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10350234 + 10350235.

It is an arithmetic number, because the mean of its divisors is an integer number (10350235).

Almost surely, 2^20700469 is an apocalyptic number.

It is an amenable number.

20700469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20700469 is an equidigital number, since it uses as much as digits as its factorization.

20700469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20700469 is about 4549.7768077127. The cubic root of 20700469 is about 274.5744116743.

The spelling of 20700469 in words is "twenty million, seven hundred thousand, four hundred sixty-nine".