1990708 has 6 divisors (see below), whose sum is σ = 3483746. Its totient is φ = 995352.

The previous prime is 1990693. The next prime is 1990753. The reversal of 1990708 is 8070991.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 850084 = 1068^2 + 922^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248835 + ... + 248842.

2^1990708 is an apocalyptic number.

It is an amenable number.

1990708 is a deficient number, since it is larger than the sum of its proper divisors (1493038).

1990708 is a wasteful number, since it uses less digits than its factorization.

1990708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497681 (or 497679 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1990708 is about 1410.9245195970. The cubic root of 1990708 is about 125.7966822584.

The spelling of 1990708 in words is "one million, nine hundred ninety thousand, seven hundred eight".