678455546 has 16 divisors (see below), whose sum is σ = 1025352960. Its totient is φ = 336681360.

The previous prime is 678455543. The next prime is 678455549. The reversal of 678455546 is 645554876.

It is an interprime number because it is at equal distance from previous prime (678455543) and next prime (678455549).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 678455494 and 678455503.

It is not an unprimeable number, because it can be changed into a prime (678455543) 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, 147875 + ... + 152393.

It is an arithmetic number, because the mean of its divisors is an integer number (64084560).

Almost surely, 2^678455546 is an apocalyptic number.

678455546 is a deficient number, since it is larger than the sum of its proper divisors (346897414).

678455546 is a wasteful number, since it uses less digits than its factorization.

678455546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069.

The product of its digits is 4032000, while the sum is 50.

The square root of 678455546 is about 26047.1792330763. The cubic root of 678455546 is about 878.6996747442.

The spelling of 678455546 in words is "six hundred seventy-eight million, four hundred fifty-five thousand, five hundred forty-six".