6501435997 has 8 divisors (see below), whose sum is σ = 7434302976. Its totient is φ = 5569591632.

The previous prime is 6501435977. The next prime is 6501436049. The reversal of 6501435997 is 7995341056.

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 6501435997 - 2²³ = 6493047389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6501435997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501435947) 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, 241978 + ... + 267499.

It is an arithmetic number, because the mean of its divisors is an integer number (929287872).

Almost surely, 2^6501435997 is an apocalyptic number.

It is an amenable number.

6501435997 is a deficient number, since it is larger than the sum of its proper divisors (932866979).

6501435997 is a wasteful number, since it uses less digits than its factorization.

6501435997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511307.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The square root of 6501435997 is about 80631.4826665118. The cubic root of 6501435997 is about 1866.3930009770.

The spelling of 6501435997 in words is "six billion, five hundred one million, four hundred thirty-five thousand, nine hundred ninety-seven".