6369638677 has 4 divisors (see below), whose sum is σ = 6589281420. Its totient is φ = 6149995936.

The previous prime is 6369638663. The next prime is 6369638687. The reversal of 6369638677 is 7768369636.

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 3234310641 + 3135328036 = 56871^2 + 55994^2 .

It is a cyclic number.

It is not a de Polignac number, because 6369638677 - 2²³ = 6361250069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6369638617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109821328 + ... + 109821385.

It is an arithmetic number, because the mean of its divisors is an integer number (1647320355).

Almost surely, 2^6369638677 is an apocalyptic number.

It is an amenable number.

6369638677 is a deficient number, since it is larger than the sum of its proper divisors (219642743).

6369638677 is a wasteful number, since it uses less digits than its factorization.

6369638677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219642742.

The product of its digits is 41150592, while the sum is 61.

The square root of 6369638677 is about 79810.0161445918. The cubic root of 6369638677 is about 1853.6949456532.

The spelling of 6369638677 in words is "six billion, three hundred sixty-nine million, six hundred thirty-eight thousand, six hundred seventy-seven".