86720903 has 2 divisors, whose sum is σ = 86720904. Its totient is φ = 86720902.

The previous prime is 86720873. The next prime is 86720939. The reversal of 86720903 is 30902768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86720903 - 2⁶ = 86720839 is a prime.

It is equal to p_5037929 and since 86720903 and 5037929 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86720983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43360451 + 43360452.

It is an arithmetic number, because the mean of its divisors is an integer number (43360452).

Almost surely, 2^86720903 is an apocalyptic number.

86720903 is a deficient number, since it is larger than the sum of its proper divisors (1).

86720903 is an equidigital number, since it uses as much as digits as its factorization.

86720903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 86720903 is about 9312.4058652960. The cubic root of 86720903 is about 442.6304261920.

The spelling of 86720903 in words is "eighty-six million, seven hundred twenty thousand, nine hundred three".