987080642 has 4 divisors (see below), whose sum is σ = 1480620966. Its totient is φ = 493540320.

The previous prime is 987080629. The next prime is 987080659. The reversal of 987080642 is 246080789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 983512321 + 3568321 = 31361^2 + 1889^2 .

It is a super-2 number, since 2×987080642² = 1948656387622264328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987080593 and 987080602.

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 as a sum of consecutive naturals, namely, 246770159 + ... + 246770162.

Almost surely, 2^987080642 is an apocalyptic number.

987080642 is a deficient number, since it is larger than the sum of its proper divisors (493540324).

987080642 is a wasteful number, since it uses less digits than its factorization.

987080642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493540323.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 987080642 is about 31417.8395501664. The cubic root of 987080642 is about 995.6748675322.

The spelling of 987080642 in words is "nine hundred eighty-seven million, eighty thousand, six hundred forty-two".