20675737 has 2 divisors, whose sum is σ = 20675738. Its totient is φ = 20675736.

The previous prime is 20675719. The next prime is 20675747. The reversal of 20675737 is 73757602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19456921 + 1218816 = 4411^2 + 1104^2 .

It is a cyclic number.

It is not a de Polignac number, because 20675737 - 2¹⁹ = 20151449 is a prime.

It is a super-2 number, since 2×20675737² = 854972200986338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20675696 and 20675705.

It is not a weakly prime, because it can be changed into another prime (20675747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337868 + 10337869.

It is an arithmetic number, because the mean of its divisors is an integer number (10337869).

Almost surely, 2^20675737 is an apocalyptic number.

It is an amenable number.

20675737 is a deficient number, since it is larger than the sum of its proper divisors (1).

20675737 is an equidigital number, since it uses as much as digits as its factorization.

20675737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 20675737 is about 4547.0580598888. The cubic root of 20675737 is about 274.4650183302.

It can be divided in two parts, 20675 and 737, that added together give a palindrome (21412).

The spelling of 20675737 in words is "twenty million, six hundred seventy-five thousand, seven hundred thirty-seven".