1662898 has 8 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 829620.

The previous prime is 1662893. The next prime is 1662901. The reversal of 1662898 is 8982661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1662898.

It is not an unprimeable number, because it can be changed into a prime (1662893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

2^1662898 is an apocalyptic number.

1662898 is a deficient number, since it is larger than the sum of its proper divisors (836942).

1662898 is an equidigital number, since it uses as much as digits as its factorization.

1662898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832.

The product of its digits is 41472, while the sum is 40.

The square root of 1662898 is about 1289.5340243669. The cubic root of 1662898 is about 118.4736777393.

The spelling of 1662898 in words is "one million, six hundred sixty-two thousand, eight hundred ninety-eight".