678334040 has 32 divisors (see below), whose sum is σ = 1534016880. Its totient is φ = 269953152.

The previous prime is 678334037. The next prime is 678334049. The reversal of 678334040 is 40433876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678334049) 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, 35162 + ... + 50921.

Almost surely, 2^678334040 is an apocalyptic number.

It is an amenable number.

678334040 is an abundant number, since it is smaller than the sum of its proper divisors (855682840).

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

678334040 is a wasteful number, since it uses less digits than its factorization.

678334040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86291 (or 86287 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 678334040 is about 26044.8467071703. The cubic root of 678334040 is about 878.6472155681.

The spelling of 678334040 in words is "six hundred seventy-eight million, three hundred thirty-four thousand, forty".