20077903 has 2 divisors, whose sum is σ = 20077904. Its totient is φ = 20077902.

The previous prime is 20077859. The next prime is 20077913. The reversal of 20077903 is 30977002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20077903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20077913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038951 + 10038952.

It is an arithmetic number, because the mean of its divisors is an integer number (10038952).

Almost surely, 2^20077903 is an apocalyptic number.

20077903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20077903 is an equidigital number, since it uses as much as digits as its factorization.

20077903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 20077903 is about 4480.8373101464. The cubic root of 20077903 is about 271.7937405101.

The spelling of 20077903 in words is "twenty million, seventy-seven thousand, nine hundred three".