678854623 has 8 divisors (see below), whose sum is σ = 682708608. Its totient is φ = 675008664.

The previous prime is 678854621. The next prime is 678854639. The reversal of 678854623 is 326458876.

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

It is a cyclic number.

It is not a de Polignac number, because 678854623 - 2¹ = 678854621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678854621) 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, 253590 + ... + 256252.

It is an arithmetic number, because the mean of its divisors is an integer number (85338576).

Almost surely, 2^678854623 is an apocalyptic number.

678854623 is a deficient number, since it is larger than the sum of its proper divisors (3853985).

678854623 is a wasteful number, since it uses less digits than its factorization.

678854623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013.

The product of its digits is 1935360, while the sum is 49.

The square root of 678854623 is about 26054.8387636539. The cubic root of 678854623 is about 878.8719287696.

The spelling of 678854623 in words is "six hundred seventy-eight million, eight hundred fifty-four thousand, six hundred twenty-three".