1988706 has 8 divisors (see below), whose sum is σ = 3977424. Its totient is φ = 662900.

The previous prime is 1988699. The next prime is 1988729. The reversal of 1988706 is 6078891.

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

1988706 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165720 + ... + 165731.

It is an arithmetic number, because the mean of its divisors is an integer number (497178).

2^1988706 is an apocalyptic number.

1988706 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.

1988706 is a wasteful number, since it uses less digits than its factorization.

1988706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331456.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1988706 is about 1410.2148772439. The cubic root of 1988706 is about 125.7544980322.

The spelling of 1988706 in words is "one million, nine hundred eighty-eight thousand, seven hundred six".