20920703 has 2 divisors, whose sum is σ = 20920704. Its totient is φ = 20920702.

The previous prime is 20920699. The next prime is 20920723. The reversal of 20920703 is 30702902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20920703 - 2² = 20920699 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20920723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10460351 + 10460352.

It is an arithmetic number, because the mean of its divisors is an integer number (10460352).

Almost surely, 2^20920703 is an apocalyptic number.

20920703 is a deficient number, since it is larger than the sum of its proper divisors (1).

20920703 is an equidigital number, since it uses as much as digits as its factorization.

20920703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20920703 is about 4573.9154998754. The cubic root of 20920703 is about 275.5447186586.

The spelling of 20920703 in words is "twenty million, nine hundred twenty thousand, seven hundred three".