20373697 has 2 divisors, whose sum is σ = 20373698. Its totient is φ = 20373696.

The previous prime is 20373673. The next prime is 20373713. The reversal of 20373697 is 79637302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 6713281 = 3696^2 + 2591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20373697 is a prime.

It is equal to p_1292788 and since 20373697 and 1292788 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 (20370697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10186848 + 10186849.

It is an arithmetic number, because the mean of its divisors is an integer number (10186849).

Almost surely, 2^20373697 is an apocalyptic number.

It is an amenable number.

20373697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20373697 is an equidigital number, since it uses as much as digits as its factorization.

20373697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 20373697 is about 4513.7231860184. The cubic root of 20373697 is about 273.1219561824.

The spelling of 20373697 in words is "twenty million, three hundred seventy-three thousand, six hundred ninety-seven".