5670644729 has 8 divisors (see below), whose sum is σ = 6102642888. Its totient is φ = 5249583360.

The previous prime is 5670644711. The next prime is 5670644731. The reversal of 5670644729 is 9274460765.

It can be written as a sum of positive squares in 4 ways, for example, as 662959504 + 5007685225 = 25748^2 + 70765^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5670644729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5670644429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733122 + ... + 2735195.

It is an arithmetic number, because the mean of its divisors is an integer number (762830361).

Almost surely, 2^5670644729 is an apocalyptic number.

It is an amenable number.

5670644729 is a deficient number, since it is larger than the sum of its proper divisors (431998159).

5670644729 is a wasteful number, since it uses less digits than its factorization.

5670644729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468395.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The square root of 5670644729 is about 75303.6833694076. The cubic root of 5670644729 is about 1783.2441709015.

The spelling of 5670644729 in words is "five billion, six hundred seventy million, six hundred forty-four thousand, seven hundred twenty-nine".