6500661297 has 32 divisors (see below), whose sum is σ = 9906115968. Its totient is φ = 3756420096.

The previous prime is 6500661259. The next prime is 6500661301. The reversal of 6500661297 is 7921660056.

It is not a de Polignac number, because 6500661297 - 2¹² = 6500657201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6500663297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282643 + ... + 304775.

It is an arithmetic number, because the mean of its divisors is an integer number (309566124).

Almost surely, 2^6500661297 is an apocalyptic number.

It is an amenable number.

6500661297 is a deficient number, since it is larger than the sum of its proper divisors (3405454671).

6500661297 is a wasteful number, since it uses less digits than its factorization.

6500661297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22609.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 6500661297 is about 80626.6785685731. The cubic root of 6500661297 is about 1866.3188659658.

The spelling of 6500661297 in words is "six billion, five hundred million, six hundred sixty-one thousand, two hundred ninety-seven".