674487789 has 4 divisors (see below), whose sum is σ = 899317056. Its totient is φ = 449658524.

The previous prime is 674487773. The next prime is 674487791. The reversal of 674487789 is 987784476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 674487789 - 2⁴ = 674487773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674487589) 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, 112414629 + ... + 112414634.

It is an arithmetic number, because the mean of its divisors is an integer number (224829264).

Almost surely, 2^674487789 is an apocalyptic number.

It is an amenable number.

674487789 is a deficient number, since it is larger than the sum of its proper divisors (224829267).

674487789 is a wasteful number, since it uses less digits than its factorization.

674487789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224829266.

The product of its digits is 18966528, while the sum is 60.

The square root of 674487789 is about 25970.9027374868. The cubic root of 674487789 is about 876.9833817532.

The spelling of 674487789 in words is "six hundred seventy-four million, four hundred eighty-seven thousand, seven hundred eighty-nine".