987497856 has 48 divisors (see below), whose sum is σ = 2841631260. Its totient is φ = 329165568.

The previous prime is 987497851. The next prime is 987497857. The reversal of 987497856 is 658794789.

987497856 is a `hidden beast` number, since 98 + 7 + 497 + 8 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-4 number, since 4×987497856⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987497793 and 987497802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987497851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427450 + ... + 429753.

Almost surely, 2^987497856 is an apocalyptic number.

987497856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

987497856 is an abundant number, since it is smaller than the sum of its proper divisors (1854133404).

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

987497856 is a wasteful number, since it uses less digits than its factorization.

987497856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857223 (or 857208 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 987497856 is about 31424.4786114265. The cubic root of 987497856 is about 995.8151299595.

The spelling of 987497856 in words is "nine hundred eighty-seven million, four hundred ninety-seven thousand, eight hundred fifty-six".