1678412 has 6 divisors (see below), whose sum is σ = 2937228. Its totient is φ = 839204.

The previous prime is 1678409. The next prime is 1678421. The reversal of 1678412 is 2148761.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209798 + ... + 209805.

It is an arithmetic number, because the mean of its divisors is an integer number (489538).

2^1678412 is an apocalyptic number.

It is an amenable number.

1678412 is a deficient number, since it is larger than the sum of its proper divisors (1258816).

1678412 is a wasteful number, since it uses less digits than its factorization.

1678412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419607 (or 419605 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 1678412 is about 1295.5354105543. The cubic root of 1678412 is about 118.8409711043.

The spelling of 1678412 in words is "one million, six hundred seventy-eight thousand, four hundred twelve".