987856966 has 16 divisors (see below), whose sum is σ = 1497968640. Its totient is φ = 488563720.

The previous prime is 987856921. The next prime is 987856967. The reversal of 987856966 is 669658789.

It is a super-2 number, since 2×987856966² = 1951722770549450312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987856898 and 987856907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987856967) 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, 61155 + ... + 75601.

It is an arithmetic number, because the mean of its divisors is an integer number (93623040).

Almost surely, 2^987856966 is an apocalyptic number.

987856966 is a deficient number, since it is larger than the sum of its proper divisors (510111674).

987856966 is a wasteful number, since it uses less digits than its factorization.

987856966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14819.

The product of its digits is 39191040, while the sum is 64.

The square root of 987856966 is about 31430.1919497798. The cubic root of 987856966 is about 995.9358268735.

The spelling of 987856966 in words is "nine hundred eighty-seven million, eight hundred fifty-six thousand, nine hundred sixty-six".