678004454 has 12 divisors (see below), whose sum is σ = 1042421892. Its totient is φ = 330732240.

The previous prime is 678004399. The next prime is 678004499. The reversal of 678004454 is 454400876.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97472 + ... + 104195.

It is an arithmetic number, because the mean of its divisors is an integer number (86868491).

Almost surely, 2^678004454 is an apocalyptic number.

678004454 is a deficient number, since it is larger than the sum of its proper divisors (364417438).

678004454 is a wasteful number, since it uses less digits than its factorization.

678004454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201751 (or 201710 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 678004454 is about 26038.5186598624. The cubic root of 678004454 is about 878.5048880822.

The spelling of 678004454 in words is "six hundred seventy-eight million, four thousand, four hundred fifty-four".