747820673 has 8 divisors (see below), whose sum is σ = 753305448. Its totient is φ = 742345344.

The previous prime is 747820609. The next prime is 747820681. The reversal of 747820673 is 376028747.

It can be written as a sum of positive squares in 4 ways, for example, as 184090624 + 563730049 = 13568^2 + 23743^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 747820673 - 2⁶ = 747820609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (747820573) 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 7 ways as a sum of consecutive naturals, for example, 251765 + ... + 254717.

It is an arithmetic number, because the mean of its divisors is an integer number (94163181).

Almost surely, 2^747820673 is an apocalyptic number.

It is an amenable number.

747820673 is a deficient number, since it is larger than the sum of its proper divisors (5484775).

747820673 is a wasteful number, since it uses less digits than its factorization.

747820673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 747820673 is about 27346.3100435872. The cubic root of 747820673 is about 907.6794204413.

The spelling of 747820673 in words is "seven hundred forty-seven million, eight hundred twenty thousand, six hundred seventy-three".