678034344 has 64 divisors (see below), whose sum is σ = 1828391040. Its totient is φ = 208293120.

The previous prime is 678034321. The next prime is 678034373. The reversal of 678034344 is 443430876.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254829 + ... + 257475.

It is an arithmetic number, because the mean of its divisors is an integer number (28568610).

Almost surely, 2^678034344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678034344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914195520).

678034344 is an abundant number, since it is smaller than the sum of its proper divisors (1150356696).

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

678034344 is a wasteful number, since it uses less digits than its factorization.

678034344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 678034344 is about 26039.0926109187. The cubic root of 678034344 is about 878.5177975969.

The spelling of 678034344 in words is "six hundred seventy-eight million, thirty-four thousand, three hundred forty-four".