1990662 has 8 divisors (see below), whose sum is σ = 3981336. Its totient is φ = 663552.

The previous prime is 1990661. The next prime is 1990679. The reversal of 1990662 is 2660991.

It is a happy number.

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

1990662 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165883 + ... + 165894.

It is an arithmetic number, because the mean of its divisors is an integer number (497667).

2^1990662 is an apocalyptic number.

1990662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1990662 is a wasteful number, since it uses less digits than its factorization.

1990662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331782.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1990662 is about 1410.9082181347. The cubic root of 1990662 is about 125.7957133080.

The spelling of 1990662 in words is "one million, nine hundred ninety thousand, six hundred sixty-two".