6889138077 has 8 divisors (see below), whose sum is σ = 9433774816. Its totient is φ = 4468630032.

The previous prime is 6889138063. The next prime is 6889138079. The reversal of 6889138077 is 7708319886.

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

It is not a de Polignac number, because 6889138077 - 2⁶ = 6889138013 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 (6889138079) 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, 31032043 + ... + 31032264.

It is an arithmetic number, because the mean of its divisors is an integer number (1179221852).

Almost surely, 2^6889138077 is an apocalyptic number.

It is an amenable number.

6889138077 is a deficient number, since it is larger than the sum of its proper divisors (2544636739).

6889138077 is a wasteful number, since it uses less digits than its factorization.

6889138077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62064347.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The square root of 6889138077 is about 83000.8317849888. The cubic root of 6889138077 is about 1902.7787666429.

The spelling of 6889138077 in words is "six billion, eight hundred eighty-nine million, one hundred thirty-eight thousand, seventy-seven".