87878603 has 2 divisors, whose sum is σ = 87878604. Its totient is φ = 87878602.

The previous prime is 87878597. The next prime is 87878683. The reversal of 87878603 is 30687878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87878603 - 2⁸ = 87878347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (87878683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43939301 + 43939302.

It is an arithmetic number, because the mean of its divisors is an integer number (43939302).

Almost surely, 2^87878603 is an apocalyptic number.

87878603 is a deficient number, since it is larger than the sum of its proper divisors (1).

87878603 is an equidigital number, since it uses as much as digits as its factorization.

87878603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 87878603 is about 9374.3588047397. The cubic root of 87878603 is about 444.5913902690.

The spelling of 87878603 in words is "eighty-seven million, eight hundred seventy-eight thousand, six hundred three".