673720359 has 24 divisors (see below), whose sum is σ = 975024000. Its totient is φ = 413610912.

The previous prime is 673720339. The next prime is 673720367. The reversal of 673720359 is 953027376.

It is a happy number.

It is not a de Polignac number, because 673720359 - 2¹⁵ = 673687591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673720359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673720339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251662 + ... + 254324.

It is an arithmetic number, because the mean of its divisors is an integer number (40626000).

Almost surely, 2^673720359 is an apocalyptic number.

673720359 is a deficient number, since it is larger than the sum of its proper divisors (301303641).

673720359 is a wasteful number, since it uses less digits than its factorization.

673720359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 42.

The square root of 673720359 is about 25956.1237283228. The cubic root of 673720359 is about 876.6506459184.

The spelling of 673720359 in words is "six hundred seventy-three million, seven hundred twenty thousand, three hundred fifty-nine".