6503897 has 4 divisors (see below), whose sum is σ = 6679716. Its totient is φ = 6328080.

The previous prime is 6503869. The next prime is 6503923. The reversal of 6503897 is 7983056.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4596736 + 1907161 = 2144^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 6503897 - 2¹⁶ = 6438361 is a prime.

It is an Ulam number.

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 6503897.

It is not an unprimeable number, because it can be changed into a prime (6503807) 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, 87854 + ... + 87927.

It is an arithmetic number, because the mean of its divisors is an integer number (1669929).

Almost surely, 2^6503897 is an apocalyptic number.

It is an amenable number.

6503897 is a deficient number, since it is larger than the sum of its proper divisors (175819).

6503897 is a wasteful number, since it uses less digits than its factorization.

6503897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175818.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 6503897 is about 2550.2739068578. The cubic root of 6503897 is about 186.6628467897.

The spelling of 6503897 in words is "six million, five hundred three thousand, eight hundred ninety-seven".