6880861 has 8 divisors (see below), whose sum is σ = 7532504. Its totient is φ = 6246720.

The previous prime is 6880837. The next prime is 6880871. The reversal of 6880861 is 1680886.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 6528025 = 594^2 + 2555^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6880861 - 2¹¹ = 6878813 is a prime.

It is an Ulam number.

It is a Duffinian number.

6880861 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6880861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6880871) 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, 3546 + ... + 5131.

It is an arithmetic number, because the mean of its divisors is an integer number (941563).

Almost surely, 2^6880861 is an apocalyptic number.

6880861 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6880861 is a deficient number, since it is larger than the sum of its proper divisors (651643).

6880861 is a wasteful number, since it uses less digits than its factorization.

6880861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8751.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 6880861 is about 2623.1395311725. The cubic root of 6880861 is about 190.2016418829.

The spelling of 6880861 in words is "six million, eight hundred eighty thousand, eight hundred sixty-one".