1682990 has 32 divisors (see below), whose sum is σ = 3214080. Its totient is φ = 633600.

The previous prime is 1682987. The next prime is 1682999. The reversal of 1682990 is 992861.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1682990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18866 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2^1682990 is an apocalyptic number.

1682990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1682990 is a deficient number, since it is larger than the sum of its proper divisors (1531090).

1682990 is a wasteful number, since it uses less digits than its factorization.

1682990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1682990 is about 1297.3010444766. The cubic root of 1682990 is about 118.9489223630.

The spelling of 1682990 in words is "one million, six hundred eighty-two thousand, nine hundred ninety".