6878380097 has 4 divisors (see below), whose sum is σ = 6878714580. Its totient is φ = 6878045616.

The previous prime is 6878380039. The next prime is 6878380123. The reversal of 6878380097 is 7900838786.

It is a Cunningham number, because it is equal to 82936²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7900838786 = 2 ⋅3950419393.

It can be written as a sum of positive squares in 2 ways, for example, as 4761552016 + 2116828081 = 69004^2 + 46009^2 .

It is a cyclic number.

It is not a de Polignac number, because 6878380097 - 2⁸ = 6878379841 is a prime.

It is a super-2 number, since 2×6878380097² = 94624225517611458818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6878380007) 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, 134222 + ... + 178247.

It is an arithmetic number, because the mean of its divisors is an integer number (1719678645).

Almost surely, 2^6878380097 is an apocalyptic number.

It is an amenable number.

6878380097 is a deficient number, since it is larger than the sum of its proper divisors (334483).

6878380097 is a wasteful number, since it uses less digits than its factorization.

6878380097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334482.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 6878380097 is about 82936.0000060287. Note that the first 5 decimals coincide. The cubic root of 6878380097 is about 1901.7877998877.

The spelling of 6878380097 in words is "six billion, eight hundred seventy-eight million, three hundred eighty thousand, ninety-seven".