678601747 has 4 divisors (see below), whose sum is σ = 678771400. Its totient is φ = 678432096.

The previous prime is 678601723. The next prime is 678601751. The reversal of 678601747 is 747106876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 678601747 - 2¹¹ = 678599699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678601697 and 678601706.

It is not an unprimeable number, because it can be changed into a prime (678601787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78678 + ... + 86875.

It is an arithmetic number, because the mean of its divisors is an integer number (169692850).

Almost surely, 2^678601747 is an apocalyptic number.

678601747 is a deficient number, since it is larger than the sum of its proper divisors (169653).

678601747 is a wasteful number, since it uses less digits than its factorization.

678601747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169652.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 678601747 is about 26049.9855470209. The cubic root of 678601747 is about 878.7627874739.

The spelling of 678601747 in words is "six hundred seventy-eight million, six hundred one thousand, seven hundred forty-seven".