6880387 has 4 divisors (see below), whose sum is σ = 7040440. Its totient is φ = 6720336.

The previous prime is 6880369. The next prime is 6880411. The reversal of 6880387 is 7830886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6880387 - 2⁷ = 6880259 is a prime.

It is a Duffinian number.

6880387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6880327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79962 + ... + 80047.

It is an arithmetic number, because the mean of its divisors is an integer number (1760110).

Almost surely, 2^6880387 is an apocalyptic number.

6880387 is a deficient number, since it is larger than the sum of its proper divisors (160053).

6880387 is a wasteful number, since it uses less digits than its factorization.

6880387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160052.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 6880387 is about 2623.0491798668. The cubic root of 6880387 is about 190.1972743263.

The spelling of 6880387 in words is "six million, eight hundred eighty thousand, three hundred eighty-seven".