987226646 has 16 divisors (see below), whose sum is σ = 1693446144. Its totient is φ = 422832744.

The previous prime is 987226549. The next prime is 987226661. The reversal of 987226646 is 646622789.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 987226594 and 987226603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081 + ... + 44483.

It is an arithmetic number, because the mean of its divisors is an integer number (105840384).

Almost surely, 2^987226646 is an apocalyptic number.

987226646 is a deficient number, since it is larger than the sum of its proper divisors (706219498).

987226646 is a wasteful number, since it uses less digits than its factorization.

987226646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44075.

The product of its digits is 1741824, while the sum is 50.

The square root of 987226646 is about 31420.1630485903. The cubic root of 987226646 is about 995.7239568501.

The spelling of 987226646 in words is "nine hundred eighty-seven million, two hundred twenty-six thousand, six hundred forty-six".