20675371 has 2 divisors, whose sum is σ = 20675372. Its totient is φ = 20675370.

The previous prime is 20675351. The next prime is 20675381. The reversal of 20675371 is 17357602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20675371 - 2¹⁵ = 20642603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20675351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337685 + 10337686.

It is an arithmetic number, because the mean of its divisors is an integer number (10337686).

Almost surely, 2^20675371 is an apocalyptic number.

20675371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20675371 is an equidigital number, since it uses as much as digits as its factorization.

20675371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 20675371 is about 4547.0178139084. The cubic root of 20675371 is about 274.4633988025.

The spelling of 20675371 in words is "twenty million, six hundred seventy-five thousand, three hundred seventy-one".