1980678 has 24 divisors (see below), whose sum is σ = 4608792. Its totient is φ = 565824.

The previous prime is 1980673. The next prime is 1980697. The reversal of 1980678 is 8760891.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3075 + ... + 3662.

It is an arithmetic number, because the mean of its divisors is an integer number (192033).

2^1980678 is an apocalyptic number.

1980678 is an abundant number, since it is smaller than the sum of its proper divisors (2628114).

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

1980678 is a wasteful number, since it uses less digits than its factorization.

1980678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756 (or 6749 counting only the distinct ones).

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

The square root of 1980678 is about 1407.3656241361. The cubic root of 1980678 is about 125.5850547487.

The spelling of 1980678 in words is "one million, nine hundred eighty thousand, six hundred seventy-eight".