987797986 has 32 divisors (see below), whose sum is σ = 1709326080. Its totient is φ = 419371776.

The previous prime is 987797963. The next prime is 987797989. The reversal of 987797986 is 689797789.

987797986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×987797986² = 1951489722291312392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (987797989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955726 + ... + 956758.

It is an arithmetic number, because the mean of its divisors is an integer number (53416440).

Almost surely, 2^987797986 is an apocalyptic number.

987797986 is a deficient number, since it is larger than the sum of its proper divisors (721528094).

987797986 is a wasteful number, since it uses less digits than its factorization.

987797986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its digits is 96018048, while the sum is 70.

The square root of 987797986 is about 31429.2536659718. The cubic root of 987797986 is about 995.9160056962.

The spelling of 987797986 in words is "nine hundred eighty-seven million, seven hundred ninety-seven thousand, nine hundred eighty-six".