987622 has 4 divisors (see below), whose sum is σ = 1481436. Its totient is φ = 493810.

The previous prime is 987607. The next prime is 987631. The reversal of 987622 is 226789.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

987622 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246904 + ... + 246907.

It is an arithmetic number, because the mean of its divisors is an integer number (370359).

2⁹⁸⁷⁶²² is an apocalyptic number.

987622 is a deficient number, since it is larger than the sum of its proper divisors (493814).

987622 is a wasteful number, since it uses less digits than its factorization.

987622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493813.

The product of its digits is 12096, while the sum is 34.

The square root of 987622 is about 993.7917286836. The cubic root of 987622 is about 99.5856858082.

The spelling of 987622 in words is "nine hundred eighty-seven thousand, six hundred twenty-two".