6501997003 has 4 divisors (see below), whose sum is σ = 6513884200. Its totient is φ = 6490109808.

The previous prime is 6501996959. The next prime is 6501997027. The reversal of 6501997003 is 3007991056.

6501997003 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6501997003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6501997043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5942778 + ... + 5943871.

It is an arithmetic number, because the mean of its divisors is an integer number (1628471050).

Almost surely, 2^6501997003 is an apocalyptic number.

6501997003 is a deficient number, since it is larger than the sum of its proper divisors (11887197).

6501997003 is a wasteful number, since it uses less digits than its factorization.

6501997003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11887196.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 6501997003 is about 80634.9614187295. The cubic root of 6501997003 is about 1866.4466828383.

The spelling of 6501997003 in words is "six billion, five hundred one million, nine hundred ninety-seven thousand, three".