987220853 has 8 divisors (see below), whose sum is σ = 1008720000. Its totient is φ = 965742400.

The previous prime is 987220831. The next prime is 987220859. The reversal of 987220853 is 358022789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 987220853 - 2¹² = 987216757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987220859) 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, 127898 + ... + 135396.

It is an arithmetic number, because the mean of its divisors is an integer number (126090000).

Almost surely, 2^987220853 is an apocalyptic number.

It is an amenable number.

987220853 is a deficient number, since it is larger than the sum of its proper divisors (21499147).

987220853 is a wasteful number, since it uses less digits than its factorization.

987220853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 987220853 is about 31420.0708624280. The cubic root of 987220853 is about 995.7220092257.

The spelling of 987220853 in words is "nine hundred eighty-seven million, two hundred twenty thousand, eight hundred fifty-three".