87778914 has 16 divisors (see below), whose sum is σ = 176840928. Its totient is φ = 29045792.

The previous prime is 87778913. The next prime is 87778919. The reversal of 87778914 is 41987778.

It is not an unprimeable number, because it can be changed into a prime (87778913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52572 + ... + 54215.

It is an arithmetic number, because the mean of its divisors is an integer number (11052558).

Almost surely, 2^87778914 is an apocalyptic number.

87778914 is an abundant number, since it is smaller than the sum of its proper divisors (89062014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87778914 is a wasteful number, since it uses less digits than its factorization.

87778914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106929.

The product of its digits is 790272, while the sum is 51.

The square root of 87778914 is about 9369.0401856327. The cubic root of 87778914 is about 444.4232126570.

The spelling of 87778914 in words is "eighty-seven million, seven hundred seventy-eight thousand, nine hundred fourteen".