20364073 has 2 divisors, whose sum is σ = 20364074. Its totient is φ = 20364072.

The previous prime is 20364037. The next prime is 20364077. The reversal of 20364073 is 37046302.

Together with previous prime (20364037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20358144 + 5929 = 4512^2 + 77^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20364073 is a prime.

It is equal to p_1292227 and since 20364073 and 1292227 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 (20364077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182036 + 10182037.

It is an arithmetic number, because the mean of its divisors is an integer number (10182037).

Almost surely, 2^20364073 is an apocalyptic number.

It is an amenable number.

20364073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20364073 is an equidigital number, since it uses as much as digits as its factorization.

20364073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20364073 is about 4512.6569778790. The cubic root of 20364073 is about 273.0789441933.

It can be divided in two parts, 2036 and 4073, that multiplied together give a triangular number (8292628 = T₄₀₇₂).

The spelling of 20364073 in words is "twenty million, three hundred sixty-four thousand, seventy-three".