673785147 has 16 divisors (see below), whose sum is σ = 1027088640. Its totient is φ = 384881952.

The previous prime is 673785143. The next prime is 673785173. The reversal of 673785147 is 741587376.

It is not a de Polignac number, because 673785147 - 2² = 673785143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673785096 and 673785105.

It is not an unprimeable number, because it can be changed into a prime (673785143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96004 + ... + 102782.

It is an arithmetic number, because the mean of its divisors is an integer number (64193040).

Almost surely, 2^673785147 is an apocalyptic number.

673785147 is a deficient number, since it is larger than the sum of its proper divisors (353303493).

673785147 is a wasteful number, since it uses less digits than its factorization.

673785147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522.

The product of its digits is 987840, while the sum is 48.

The square root of 673785147 is about 25957.3717275074. The cubic root of 673785147 is about 876.6787459160.

The spelling of 673785147 in words is "six hundred seventy-three million, seven hundred eighty-five thousand, one hundred forty-seven".