6520261897 has 8 divisors (see below), whose sum is σ = 6547029120. Its totient is φ = 6493515120.

The previous prime is 6520261873. The next prime is 6520261921. The reversal of 6520261897 is 7981620256.

It is an interprime number because it is at equal distance from previous prime (6520261873) and next prime (6520261921).

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 6520261897 - 2²³ = 6511873289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6520261997) 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, 1118763 + ... + 1124575.

It is an arithmetic number, because the mean of its divisors is an integer number (818378640).

Almost surely, 2^6520261897 is an apocalyptic number.

It is an amenable number.

6520261897 is a deficient number, since it is larger than the sum of its proper divisors (26767223).

6520261897 is a wasteful number, since it uses less digits than its factorization.

6520261897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 6520261897 is about 80748.1386596620. The cubic root of 6520261897 is about 1868.1927401973.

The spelling of 6520261897 in words is "six billion, five hundred twenty million, two hundred sixty-one thousand, eight hundred ninety-seven".