6501348997 has 54 divisors (see below), whose sum is σ = 8198790054. Its totient is φ = 5120232480.

The previous prime is 6501348961. The next prime is 6501349007. The reversal of 6501348997 is 7998431056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4500933921 + 2000415076 = 67089^2 + 44726^2 .

It is not a de Polignac number, because 6501348997 - 2²³ = 6492960389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501348937) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 60760218 + ... + 60760324.

Almost surely, 2^6501348997 is an apocalyptic number.

It is an amenable number.

6501348997 is a deficient number, since it is larger than the sum of its proper divisors (1697441057).

6501348997 is a wasteful number, since it uses less digits than its factorization.

6501348997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 6501348997 is about 80630.9431732012. The cubic root of 6501348997 is about 1866.3846757949.

Multiplying 6501348997 by its sum of digits (52), we get a square (338070147844 = 581438²).

The spelling of 6501348997 in words is "six billion, five hundred one million, three hundred forty-eight thousand, nine hundred ninety-seven".