20914669 has 2 divisors, whose sum is σ = 20914670. Its totient is φ = 20914668.

The previous prime is 20914667. The next prime is 20914679. The reversal of 20914669 is 96641902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 7628644 = 3645^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 20914669 - 2¹ = 20914667 is a prime.

It is a super-2 number, since 2×20914669² = 874846758759122, which contains 22 as substring.

Together with 20914667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20914667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457334 + 10457335.

It is an arithmetic number, because the mean of its divisors is an integer number (10457335).

Almost surely, 2^20914669 is an apocalyptic number.

It is an amenable number.

20914669 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914669 is an equidigital number, since it uses as much as digits as its factorization.

20914669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20914669 is about 4573.2558423950. The cubic root of 20914669 is about 275.5182250189.

It can be divided in two parts, 209 and 14669, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 20914669 in words is "twenty million, nine hundred fourteen thousand, six hundred sixty-nine".