678224461806 has 48 divisors (see below), whose sum is σ = 1501026718464. Its totient is φ = 221224215312.

The previous prime is 678224461801. The next prime is 678224461807. The reversal of 678224461806 is 608164422876.

It is a happy number.

678224461806 is a `hidden beast` number, since 6 + 7 + 82 + 24 + 461 + 80 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678224461801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4737285 + ... + 4878351.

It is an arithmetic number, because the mean of its divisors is an integer number (31271389968).

Almost surely, 2^678224461806 is an apocalyptic number.

678224461806 is an abundant number, since it is smaller than the sum of its proper divisors (822802256658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678224461806 is a wasteful number, since it uses less digits than its factorization.

678224461806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146805 (or 146802 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 678224461806 in words is "six hundred seventy-eight billion, two hundred twenty-four million, four hundred sixty-one thousand, eight hundred six".