6396729577 has 8 divisors (see below), whose sum is σ = 7332636992. Its totient is φ = 5466344400.

The previous prime is 6396729551. The next prime is 6396729589. The reversal of 6396729577 is 7759276936.

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-6396729577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6396729517) 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, 1378074 + ... + 1382707.

It is an arithmetic number, because the mean of its divisors is an integer number (916579624).

Almost surely, 2^6396729577 is an apocalyptic number.

It is an amenable number.

6396729577 is a deficient number, since it is larger than the sum of its proper divisors (935907415).

6396729577 is a wasteful number, since it uses less digits than its factorization.

6396729577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761119.

The product of its digits is 30005640, while the sum is 61.

The square root of 6396729577 is about 79979.5572443359. The cubic root of 6396729577 is about 1856.3192304184.

The spelling of 6396729577 in words is "six billion, three hundred ninety-six million, seven hundred twenty-nine thousand, five hundred seventy-seven".