678802054 has 16 divisors (see below), whose sum is σ = 1177682688. Its totient is φ = 287409672.

The previous prime is 678802051. The next prime is 678802057. The reversal of 678802054 is 450208876.

It is an interprime number because it is at equal distance from previous prime (678802051) and next prime (678802057).

It is a junction number, because it is equal to n+sod(n) for n = 678801998 and 678802016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678802051) 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, 290922 + ... + 293245.

It is an arithmetic number, because the mean of its divisors is an integer number (73605168).

Almost surely, 2^678802054 is an apocalyptic number.

678802054 is a deficient number, since it is larger than the sum of its proper divisors (498880634).

678802054 is a wasteful number, since it uses less digits than its factorization.

678802054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584259.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 678802054 is about 26053.8299295900. The cubic root of 678802054 is about 878.8492422181.

The spelling of 678802054 in words is "six hundred seventy-eight million, eight hundred two thousand, fifty-four".