673284787 has 8 divisors (see below), whose sum is σ = 772248416. Its totient is φ = 575016192.

The previous prime is 673284763. The next prime is 673284791. The reversal of 673284787 is 787482376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673284787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673284707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171678 + ... + 175555.

It is an arithmetic number, because the mean of its divisors is an integer number (96531052).

Almost surely, 2^673284787 is an apocalyptic number.

673284787 is a deficient number, since it is larger than the sum of its proper divisors (98963629).

673284787 is a wasteful number, since it uses less digits than its factorization.

673284787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347517.

The product of its digits is 3161088, while the sum is 52.

The square root of 673284787 is about 25947.7318276569. The cubic root of 673284787 is about 876.4616818626.

It can be divided in two parts, 6732 and 84787, that added together give a palindrome (91519).

The spelling of 673284787 in words is "six hundred seventy-three million, two hundred eighty-four thousand, seven hundred eighty-seven".