7678361 has 2 divisors, whose sum is σ = 7678362. Its totient is φ = 7678360.

The previous prime is 7678331. The next prime is 7678367. The reversal of 7678361 is 1638767.

7678361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5593225 + 2085136 = 2365^2 + 1444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7678361 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (7678367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3839180 + 3839181.

It is an arithmetic number, because the mean of its divisors is an integer number (3839181).

Almost surely, 2^7678361 is an apocalyptic number.

It is an amenable number.

7678361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7678361 is an equidigital number, since it uses as much as digits as its factorization.

7678361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 7678361 is about 2770.9855647405. The cubic root of 7678361 is about 197.2829298035.

The spelling of 7678361 in words is "seven million, six hundred seventy-eight thousand, three hundred sixty-one".