6887639395 has 16 divisors (see below), whose sum is σ = 10172514240. Its totient is φ = 4359648384.

The previous prime is 6887639359. The next prime is 6887639399. The reversal of 6887639395 is 5939367886.

It is not a de Polignac number, because 6887639395 - 2¹³ = 6887631203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6887639399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7568380 + ... + 7569289.

It is an arithmetic number, because the mean of its divisors is an integer number (635782140).

Almost surely, 2^6887639395 is an apocalyptic number.

6887639395 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6887639395 is a deficient number, since it is larger than the sum of its proper divisors (3284874845).

6887639395 is a wasteful number, since it uses less digits than its factorization.

6887639395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15137694.

The product of its digits is 58786560, while the sum is 64.

The square root of 6887639395 is about 82991.8031795912. The cubic root of 6887639395 is about 1902.6407780650.

The spelling of 6887639395 in words is "six billion, eight hundred eighty-seven million, six hundred thirty-nine thousand, three hundred ninety-five".