1205998 has 4 divisors (see below), whose sum is σ = 1809000. Its totient is φ = 602998.

The previous prime is 1205977. The next prime is 1205999. The reversal of 1205998 is 8995021.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301498 + ... + 301501.

It is an arithmetic number, because the mean of its divisors is an integer number (452250).

2^1205998 is an apocalyptic number.

1205998 is a deficient number, since it is larger than the sum of its proper divisors (603002).

1205998 is an equidigital number, since it uses as much as digits as its factorization.

1205998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603001.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1205998 is about 1098.1794024657. The cubic root of 1205998 is about 106.4426134734.

The spelling of 1205998 in words is "one million, two hundred five thousand, nine hundred ninety-eight".