1906680 has 32 divisors (see below), whose sum is σ = 5720400. Its totient is φ = 508416.

The previous prime is 1906673. The next prime is 1906691. The reversal of 1906680 is 866091.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7825 + ... + 8064.

2^1906680 is an apocalyptic number.

1906680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906680 is an abundant number, since it is smaller than the sum of its proper divisors (3813720).

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

1906680 is a wasteful number, since it uses less digits than its factorization.

1906680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15903 (or 15899 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1906680 is about 1380.8258398509. The cubic root of 1906680 is about 124.0012140013.

The spelling of 1906680 in words is "one million, nine hundred six thousand, six hundred eighty".