961085987 has 8 divisors (see below), whose sum is σ = 1028817600. Its totient is φ = 895069224.

The previous prime is 961085947. The next prime is 961085999. The reversal of 961085987 is 789580169.

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 961085987 - 2⁸ = 961085731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961085947) 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, 427553 + ... + 429794.

It is an arithmetic number, because the mean of its divisors is an integer number (128602200).

Almost surely, 2^961085987 is an apocalyptic number.

961085987 is a deficient number, since it is larger than the sum of its proper divisors (67731613).

961085987 is a wasteful number, since it uses less digits than its factorization.

961085987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857425.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 961085987 is about 31001.3868560747. The cubic root of 961085987 is about 986.8566720885.

The spelling of 961085987 in words is "nine hundred sixty-one million, eighty-five thousand, nine hundred eighty-seven".