6398722535 has 8 divisors (see below), whose sum is σ = 7712294256. Its totient is φ = 5096426560.

The previous prime is 6398722483. The next prime is 6398722559. The reversal of 6398722535 is 5352278936.

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

It is a de Polignac number, because none of the positive numbers 2^k-6398722535 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2817686 + ... + 2819955.

It is an arithmetic number, because the mean of its divisors is an integer number (964036782).

Almost surely, 2^6398722535 is an apocalyptic number.

6398722535 is a deficient number, since it is larger than the sum of its proper divisors (1313571721).

6398722535 is a wasteful number, since it uses less digits than its factorization.

6398722535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637873.

The product of its digits is 2721600, while the sum is 50.

The square root of 6398722535 is about 79992.0154452930. The cubic root of 6398722535 is about 1856.5119946568.

The spelling of 6398722535 in words is "six billion, three hundred ninety-eight million, seven hundred twenty-two thousand, five hundred thirty-five".