20695093 has 2 divisors, whose sum is σ = 20695094. Its totient is φ = 20695092.

The previous prime is 20695061. The next prime is 20695109. The reversal of 20695093 is 39059602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11410884 + 9284209 = 3378^2 + 3047^2 .

It is a cyclic number.

It is not a de Polignac number, because 20695093 - 2⁵ = 20695061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20695033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10347546 + 10347547.

It is an arithmetic number, because the mean of its divisors is an integer number (10347547).

Almost surely, 2^20695093 is an apocalyptic number.

It is an amenable number.

20695093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20695093 is an equidigital number, since it uses as much as digits as its factorization.

20695093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 20695093 is about 4549.1859711381. The cubic root of 20695093 is about 274.5506402348.

The spelling of 20695093 in words is "twenty million, six hundred ninety-five thousand, ninety-three".