987657441 has 8 divisors (see below), whose sum is σ = 1321773120. Its totient is φ = 655990032.

The previous prime is 987657439. The next prime is 987657443. The reversal of 987657441 is 144756789.

It is an interprime number because it is at equal distance from previous prime (987657439) and next prime (987657443).

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

It is not a de Polignac number, because 987657441 - 2¹ = 987657439 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (987657443) 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, 611125 + ... + 612738.

It is an arithmetic number, because the mean of its divisors is an integer number (165221640).

Almost surely, 2^987657441 is an apocalyptic number.

It is an amenable number.

987657441 is a deficient number, since it is larger than the sum of its proper divisors (334115679).

987657441 is a wasteful number, since it uses less digits than its factorization.

987657441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224135.

The product of its digits is 1693440, while the sum is 51.

The square root of 987657441 is about 31427.0176917887. The cubic root of 987657441 is about 995.8687701089.

The spelling of 987657441 in words is "nine hundred eighty-seven million, six hundred fifty-seven thousand, four hundred forty-one".