20675351 has 2 divisors, whose sum is σ = 20675352. Its totient is φ = 20675350.

The previous prime is 20675309. The next prime is 20675371. The reversal of 20675351 is 15357602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20675351 - 2¹⁰ = 20674327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20675371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337675 + 10337676.

It is an arithmetic number, because the mean of its divisors is an integer number (10337676).

Almost surely, 2^20675351 is an apocalyptic number.

20675351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20675351 is an equidigital number, since it uses as much as digits as its factorization.

20675351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 20675351 is about 4547.0156146642. The cubic root of 20675351 is about 274.4633103031.

It can be divided in two parts, 206 and 75351, that added together give a palindrome (75557).

The spelling of 20675351 in words is "twenty million, six hundred seventy-five thousand, three hundred fifty-one".