6385695977 has 8 divisors (see below), whose sum is σ = 6680118600. Its totient is φ = 6096221824.

The previous prime is 6385695973. The next prime is 6385695989. The reversal of 6385695977 is 7795965836.

6385695977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 200817241 + 6184878736 = 14171^2 + 78644^2 .

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 6385695977 - 2² = 6385695973 is a prime.

It is a super-2 number, since 2×6385695977² = 81554226221347969058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6385695971) 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, 1234478 + ... + 1239639.

It is an arithmetic number, because the mean of its divisors is an integer number (835014825).

Almost surely, 2^6385695977 is an apocalyptic number.

It is an amenable number.

6385695977 is a deficient number, since it is larger than the sum of its proper divisors (294422623).

6385695977 is a wasteful number, since it uses less digits than its factorization.

6385695977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474235.

The product of its digits is 85730400, while the sum is 65.

The square root of 6385695977 is about 79910.5498479394. The cubic root of 6385695977 is about 1855.2513059847.

The spelling of 6385695977 in words is "six billion, three hundred eighty-five million, six hundred ninety-five thousand, nine hundred seventy-seven".