20674253 has 2 divisors, whose sum is σ = 20674254. Its totient is φ = 20674252.

The previous prime is 20674243. The next prime is 20674267. The reversal of 20674253 is 35247602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20187049 + 487204 = 4493^2 + 698^2 .

It is a cyclic number.

It is not a de Polignac number, because 20674253 - 2⁴ = 20674237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20674243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337126 + 10337127.

It is an arithmetic number, because the mean of its divisors is an integer number (10337127).

Almost surely, 2^20674253 is an apocalyptic number.

It is an amenable number.

20674253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20674253 is an equidigital number, since it uses as much as digits as its factorization.

20674253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20674253 is about 4546.8948745270. The cubic root of 20674253 is about 274.4584516021.

The spelling of 20674253 in words is "twenty million, six hundred seventy-four thousand, two hundred fifty-three".