678656094 has 16 divisors (see below), whose sum is σ = 1362215568. Its totient is φ = 225401472.

The previous prime is 678656093. The next prime is 678656119. The reversal of 678656094 is 490656876.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678656093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202507 + ... + 205830.

It is an arithmetic number, because the mean of its divisors is an integer number (85138473).

Almost surely, 2^678656094 is an apocalyptic number.

678656094 is an abundant number, since it is smaller than the sum of its proper divisors (683559474).

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

678656094 is a wasteful number, since it uses less digits than its factorization.

678656094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408619.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 678656094 is about 26051.0286553142. The cubic root of 678656094 is about 878.7862459293.

The spelling of 678656094 in words is "six hundred seventy-eight million, six hundred fifty-six thousand, ninety-four".