1406680678 has 16 divisors (see below), whose sum is σ = 2306248560. Its totient is φ = 639546336.

The previous prime is 1406680673. The next prime is 1406680703. The reversal of 1406680678 is 8760866041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406680673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402013 + ... + 405496.

It is an arithmetic number, because the mean of its divisors is an integer number (144140535).

Almost surely, 2^1406680678 is an apocalyptic number.

1406680678 is a deficient number, since it is larger than the sum of its proper divisors (899567882).

1406680678 is a wasteful number, since it uses less digits than its factorization.

1406680678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807591.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1406680678 is about 37505.7419337360. The cubic root of 1406680678 is about 1120.4655478503.

The spelling of 1406680678 in words is "one billion, four hundred six million, six hundred eighty thousand, six hundred seventy-eight".