672722713 has 4 divisors (see below), whose sum is σ = 724470628. Its totient is φ = 620974800.

The previous prime is 672722681. The next prime is 672722717. The reversal of 672722713 is 317227276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41306329 + 631416384 = 6427^2 + 25128^2 .

It is a cyclic number.

It is not a de Polignac number, because 672722713 - 2⁵ = 672722681 is a prime.

It is a super-3 number, since 3×672722713³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672722717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25873938 + ... + 25873963.

It is an arithmetic number, because the mean of its divisors is an integer number (181117657).

Almost surely, 2^672722713 is an apocalyptic number.

It is an amenable number.

672722713 is a deficient number, since it is larger than the sum of its proper divisors (51747915).

672722713 is a wasteful number, since it uses less digits than its factorization.

672722713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51747914.

The product of its digits is 49392, while the sum is 37.

The square root of 672722713 is about 25936.8986773670. The cubic root of 672722713 is about 876.2177170082.

Adding to 672722713 its reverse (317227276), we get a palindrome (989949989).

The spelling of 672722713 in words is "six hundred seventy-two million, seven hundred twenty-two thousand, seven hundred thirteen".