678953654 has 8 divisors (see below), whose sum is σ = 1020386808. Its totient is φ = 338824720.

The previous prime is 678953641. The next prime is 678953659. The reversal of 678953654 is 456359876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 678953596 and 678953605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678953659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324752 + ... + 326835.

It is an arithmetic number, because the mean of its divisors is an integer number (127548351).

Almost surely, 2^678953654 is an apocalyptic number.

678953654 is a deficient number, since it is larger than the sum of its proper divisors (341433154).

678953654 is a wasteful number, since it uses less digits than its factorization.

678953654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652110.

The product of its digits is 5443200, while the sum is 53.

The square root of 678953654 is about 26056.7391282946. The cubic root of 678953654 is about 878.9146631691.

The spelling of 678953654 in words is "six hundred seventy-eight million, nine hundred fifty-three thousand, six hundred fifty-four".