87778603 has 12 divisors (see below), whose sum is σ = 100682064. Its totient is φ = 76326800.

The previous prime is 87778589. The next prime is 87778637. The reversal of 87778603 is 30687778.

It is a happy number.

It is not a de Polignac number, because 87778603 - 2⁵ = 87778571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87778673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12988 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (8390172).

Almost surely, 2^87778603 is an apocalyptic number.

87778603 is a deficient number, since it is larger than the sum of its proper divisors (12903461).

87778603 is a wasteful number, since it uses less digits than its factorization.

87778603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31586 (or 31575 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 87778603 is about 9369.0235884002. The cubic root of 87778603 is about 444.4226877938.

The spelling of 87778603 in words is "eighty-seven million, seven hundred seventy-eight thousand, six hundred three".