965898981 has 24 divisors (see below), whose sum is σ = 1447782336. Its totient is φ = 620081280.

The previous prime is 965898959. The next prime is 965899009. The reversal of 965898981 is 189898569.

It is not a de Polignac number, because 965898981 - 2¹⁰ = 965897957 is a prime.

It is a super-2 number, since 2×965898981² = 1865921682993676722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965898931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9901 + ... + 45053.

It is an arithmetic number, because the mean of its divisors is an integer number (60324264).

Almost surely, 2^965898981 is an apocalyptic number.

It is an amenable number.

965898981 is a deficient number, since it is larger than the sum of its proper divisors (481883355).

965898981 is a wasteful number, since it uses less digits than its factorization.

965898981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35273 (or 35270 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 965898981 is about 31078.9153768274. The cubic root of 965898981 is about 988.5012798916.

It can be divided in two parts, 96589 and 8981, that added together give a triangular number (105570 = T₄₅₉).

The spelling of 965898981 in words is "nine hundred sixty-five million, eight hundred ninety-eight thousand, nine hundred eighty-one".