673894500678 has 48 divisors (see below), whose sum is σ = 1668738847776. Its totient is φ = 192535781760.

The previous prime is 673894500661. The next prime is 673894500689. The reversal of 673894500678 is 876005498376.

673894500678 is a `hidden beast` number, since 6 + 7 + 38 + 94 + 500 + 6 + 7 + 8 = 666.

673894500678 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6777450 + ... + 6876162.

It is an arithmetic number, because the mean of its divisors is an integer number (34765392662).

Almost surely, 2^673894500678 is an apocalyptic number.

673894500678 is an abundant number, since it is smaller than the sum of its proper divisors (994844347098).

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

673894500678 is a wasteful number, since it uses less digits than its factorization.

673894500678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152909 (or 152906 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 673894500678 in words is "six hundred seventy-three billion, eight hundred ninety-four million, five hundred thousand, six hundred seventy-eight".