911598961 has 32 divisors (see below), whose sum is σ = 1165425408. Its totient is φ = 693826560.

The previous prime is 911598931. The next prime is 911598971. The reversal of 911598961 is 169895119.

It is not a de Polignac number, because 911598961 - 2¹⁷ = 911467889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (911598931) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 270690 + ... + 274036.

It is an arithmetic number, because the mean of its divisors is an integer number (36419544).

Almost surely, 2^911598961 is an apocalyptic number.

911598961 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

911598961 is a deficient number, since it is larger than the sum of its proper divisors (253826447).

911598961 is a wasteful number, since it uses less digits than its factorization.

911598961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481.

The product of its digits is 174960, while the sum is 49.

The square root of 911598961 is about 30192.6971468267. The cubic root of 911598961 is about 969.6193500593.

The spelling of 911598961 in words is "nine hundred eleven million, five hundred ninety-eight thousand, nine hundred sixty-one".