20485007 has 2 divisors, whose sum is σ = 20485008. Its totient is φ = 20485006.

The previous prime is 20484931. The next prime is 20485009. The reversal of 20485007 is 70058402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20485007 - 2²⁴ = 3707791 is a prime.

Together with 20485009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20485009) 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, 10242503 + 10242504.

It is an arithmetic number, because the mean of its divisors is an integer number (10242504).

Almost surely, 2^20485007 is an apocalyptic number.

20485007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20485007 is an equidigital number, since it uses as much as digits as its factorization.

20485007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20485007 is about 4526.0365663569. The cubic root of 20485007 is about 273.6184461347.

The spelling of 20485007 in words is "twenty million, four hundred eighty-five thousand, seven".