1598961 has 16 divisors (see below), whose sum is σ = 2624384. Its totient is φ = 843264.

The previous prime is 1598953. The next prime is 1598963. The reversal of 1598961 is 1698951.

It is not a de Polignac number, because 1598961 - 2³ = 1598953 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is the 1265-th Hogben number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1598963) by changing a digit.

It is a nontrivial repunit in base 1264.

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 15 ways as a sum of consecutive naturals, for example, 2656 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (164024).

2^1598961 is an apocalyptic number.

It is an amenable number.

1598961 is a deficient number, since it is larger than the sum of its proper divisors (1025423).

1598961 is a wasteful number, since it uses less digits than its factorization.

1598961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880.

The product of its digits is 19440, while the sum is 39.

The square root of 1598961 is about 1264.5002965599. The cubic root of 1598961 is about 116.9353869262.

The spelling of 1598961 in words is "one million, five hundred ninety-eight thousand, nine hundred sixty-one".