673649767 has 16 divisors (see below), whose sum is σ = 788070400. Its totient is φ = 563931072.

The previous prime is 673649749. The next prime is 673649797. The reversal of 673649767 is 767946376.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673649767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673649797) 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, 46234 + ... + 59032.

It is an arithmetic number, because the mean of its divisors is an integer number (49254400).

Almost surely, 2^673649767 is an apocalyptic number.

673649767 is a deficient number, since it is larger than the sum of its proper divisors (114420633).

673649767 is a wasteful number, since it uses less digits than its factorization.

673649767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982.

The product of its digits is 8001504, while the sum is 55.

The square root of 673649767 is about 25954.7638594536. The cubic root of 673649767 is about 876.6200265458.

The spelling of 673649767 in words is "six hundred seventy-three million, six hundred forty-nine thousand, seven hundred sixty-seven".