1355598 has 24 divisors (see below), whose sum is σ = 2965248. Its totient is φ = 447552.

The previous prime is 1355591. The next prime is 1355609. The reversal of 1355598 is 8955531.

It is a happy number.

1355598 is a `hidden beast` number, since 13 + 55 + 598 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1990 + ... + 2582.

It is an arithmetic number, because the mean of its divisors is an integer number (123552).

2^1355598 is an apocalyptic number.

1355598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1355598 is an abundant number, since it is smaller than the sum of its proper divisors (1609650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355598 is a wasteful number, since it uses less digits than its factorization.

1355598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 725 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 1355598 is about 1164.3015073425. The cubic root of 1355598 is about 110.6734987960.

It can be divided in two parts, 1355 and 598, that added together give a triangular number (1953 = T₆₂).

The spelling of 1355598 in words is "one million, three hundred fifty-five thousand, five hundred ninety-eight".