987222297600 has 2112 divisors, whose sum is σ = 4595708236800. Its totient is φ = 204241305600.

The previous prime is 987222297599. The next prime is 987222297601. The reversal of 987222297600 is 6792222789.

It is a happy number.

987222297600 is a `hidden beast` number, since 9 + 8 + 7 + 2 + 2 + 2 + 29 + 7 + 600 = 666.

It is an interprime number because it is at equal distance from previous prime (987222297599) and next prime (987222297601).

It is a tau number, because it is divible by the number of its divisors (2112).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987222297601) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4311014286 + ... + 4311014514.

Almost surely, 2^987222297600 is an apocalyptic number.

987222297600 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987222297600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2297854118400).

987222297600 is an abundant number, since it is smaller than the sum of its proper divisors (3608485939200).

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

987222297600 is a wasteful number, since it uses less digits than its factorization.

987222297600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 987222297600 in words is "nine hundred eighty-seven billion, two hundred twenty-two million, two hundred ninety-seven thousand, six hundred".