6887195478 has 64 divisors (see below), whose sum is σ = 15660933120. Its totient is φ = 2242515456.

The previous prime is 6887195477. The next prime is 6887195489. The reversal of 6887195478 is 8745917886.

6887195478 is a `hidden beast` number, since 6 + 8 + 8 + 71 + 95 + 478 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887195477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1462075 + ... + 1466777.

It is an arithmetic number, because the mean of its divisors is an integer number (244702080).

Almost surely, 2^6887195478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6887195478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7830466560).

6887195478 is an abundant number, since it is smaller than the sum of its proper divisors (8773737642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6887195478 is a wasteful number, since it uses less digits than its factorization.

6887195478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338 (or 5332 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 63.

The square root of 6887195478 is about 82989.1286735799. The cubic root of 6887195478 is about 1902.5999013251.

The spelling of 6887195478 in words is "six billion, eight hundred eighty-seven million, one hundred ninety-five thousand, four hundred seventy-eight".