20457067 has 2 divisors, whose sum is σ = 20457068. Its totient is φ = 20457066.

The previous prime is 20457049. The next prime is 20457119. The reversal of 20457067 is 76075402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20457067 is a prime.

It is a super-3 number, since 3×20457067³ (a number of 23 digits) contains 333 as substring.

It is equal to p_1297705 and since 20457067 and 1297705 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20457037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10228533 + 10228534.

It is an arithmetic number, because the mean of its divisors is an integer number (10228534).

Almost surely, 2^20457067 is an apocalyptic number.

20457067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20457067 is an equidigital number, since it uses as much as digits as its factorization.

20457067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20457067 is about 4522.9489274145. The cubic root of 20457067 is about 273.4939912475.

The spelling of 20457067 in words is "twenty million, four hundred fifty-seven thousand, sixty-seven".