678983673 has 8 divisors (see below), whose sum is σ = 906987136. Its totient is φ = 451818000.

The previous prime is 678983663. The next prime is 678983687. The reversal of 678983673 is 376389876.

It is a happy number.

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

It is not a de Polignac number, because 678983673 - 2¹⁰ = 678982649 is a prime.

It is a super-2 number, since 2×678983673² = 922037656401141858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678983603) 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, 207553 + ... + 210798.

It is an arithmetic number, because the mean of its divisors is an integer number (113373392).

Almost surely, 2^678983673 is an apocalyptic number.

It is an amenable number.

678983673 is a deficient number, since it is larger than the sum of its proper divisors (228003463).

678983673 is a wasteful number, since it uses less digits than its factorization.

678983673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418895.

The product of its digits is 9144576, while the sum is 57.

The square root of 678983673 is about 26057.3151533307. The cubic root of 678983673 is about 878.9276163117.

The spelling of 678983673 in words is "six hundred seventy-eight million, nine hundred eighty-three thousand, six hundred seventy-three".