678093146 has 12 divisors (see below), whose sum is σ = 1023351018. Its totient is φ = 336988632.

The previous prime is 678093139. The next prime is 678093149. The reversal of 678093146 is 641390876.

It can be written as a sum of positive squares in only one way, i.e., 670033225 + 8059921 = 25885^2 + 2839^2 .

It is a junction number, because it is equal to n+sod(n) for n = 678093097 and 678093106.

It is not an unprimeable number, because it can be changed into a prime (678093149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49700 + ... + 61856.

Almost surely, 2^678093146 is an apocalyptic number.

678093146 is a deficient number, since it is larger than the sum of its proper divisors (345257872).

678093146 is a wasteful number, since it uses less digits than its factorization.

678093146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493 (or 12326 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 678093146 is about 26040.2216964449. The cubic root of 678093146 is about 878.5431931198.

The spelling of 678093146 in words is "six hundred seventy-eight million, ninety-three thousand, one hundred forty-six".