6981587249 has 8 divisors (see below), whose sum is σ = 8592722880. Its totient is φ = 5523893136.

The previous prime is 6981587219. The next prime is 6981587273. The reversal of 6981587249 is 9427851896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6981587249 - 2¹² = 6981583153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6981587219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38360279 + ... + 38360460.

It is an arithmetic number, because the mean of its divisors is an integer number (1074090360).

Almost surely, 2^6981587249 is an apocalyptic number.

It is an amenable number.

6981587249 is a deficient number, since it is larger than the sum of its proper divisors (1611135631).

6981587249 is a wasteful number, since it uses less digits than its factorization.

6981587249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76720759.

The product of its digits is 8709120, while the sum is 59.

The square root of 6981587249 is about 83555.8929639316. The cubic root of 6981587249 is about 1911.2524564100.

The spelling of 6981587249 in words is "six billion, nine hundred eighty-one million, five hundred eighty-seven thousand, two hundred forty-nine".