6520677995 has 32 divisors (see below), whose sum is σ = 8534054592. Its totient is φ = 4754276352.

The previous prime is 6520677991. The next prime is 6520678019. The reversal of 6520677995 is 5997760256.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6520677995 - 2² = 6520677991 is a prime.

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 6520677995.

It is not an unprimeable number, because it can be changed into a prime (6520677991) 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, 2077067 + ... + 2080203.

It is an arithmetic number, because the mean of its divisors is an integer number (266689206).

Almost surely, 2^6520677995 is an apocalyptic number.

6520677995 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6520677995 is a deficient number, since it is larger than the sum of its proper divisors (2013376597).

6520677995 is a wasteful number, since it uses less digits than its factorization.

6520677995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 7144200, while the sum is 56.

The square root of 6520677995 is about 80750.7151361522. The cubic root of 6520677995 is about 1868.2324796403.

The spelling of 6520677995 in words is "six billion, five hundred twenty million, six hundred seventy-seven thousand, nine hundred ninety-five".