87791203 has 2 divisors, whose sum is σ = 87791204. Its totient is φ = 87791202.

The previous prime is 87791189. The next prime is 87791219. The reversal of 87791203 is 30219778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87791203 - 2⁹ = 87790691 is a prime.

It is not a weakly prime, because it can be changed into another prime (87791273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43895601 + 43895602.

It is an arithmetic number, because the mean of its divisors is an integer number (43895602).

Almost surely, 2^87791203 is an apocalyptic number.

87791203 is a deficient number, since it is larger than the sum of its proper divisors (1).

87791203 is an equidigital number, since it uses as much as digits as its factorization.

87791203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 87791203 is about 9369.6959929338. The cubic root of 87791203 is about 444.4439513582.

The spelling of 87791203 in words is "eighty-seven million, seven hundred ninety-one thousand, two hundred three".