987774 has 16 divisors (see below), whose sum is σ = 1988112. Its totient is φ = 327168.

The previous prime is 987739. The next prime is 987793. The reversal of 987774 is 477789.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987774.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (124257).

2⁹⁸⁷⁷⁷⁴ is an apocalyptic number.

987774 is an abundant number, since it is smaller than the sum of its proper divisors (1000338).

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

987774 is a wasteful number, since it uses less digits than its factorization.

987774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its digits is 98784, while the sum is 42.

The square root of 987774 is about 993.8682005176. The cubic root of 987774 is about 99.5907944590.

The spelling of 987774 in words is "nine hundred eighty-seven thousand, seven hundred seventy-four".