6616820577 has 8 divisors (see below), whose sum is σ = 8860954240. Its totient is φ = 4391950320.

The previous prime is 6616820569. The next prime is 6616820591. The reversal of 6616820577 is 7750286166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6616820577 - 2³ = 6616820569 is a prime.

It is a super-2 number, since 2×6616820577² = 87564629096421225858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616820537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4815049 + ... + 4816422.

It is an arithmetic number, because the mean of its divisors is an integer number (1107619280).

Almost surely, 2^6616820577 is an apocalyptic number.

It is an amenable number.

6616820577 is a deficient number, since it is larger than the sum of its proper divisors (2244133663).

6616820577 is a wasteful number, since it uses less digits than its factorization.

6616820577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631703.

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 6616820577 is about 81343.8416661028. The cubic root of 6616820577 is about 1877.3696216858.

The spelling of 6616820577 in words is "six billion, six hundred sixteen million, eight hundred twenty thousand, five hundred seventy-seven".