7678428547 has 2 divisors, whose sum is σ = 7678428548. Its totient is φ = 7678428546.

The previous prime is 7678428503. The next prime is 7678428581. The reversal of 7678428547 is 7458248767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7678428547 - 2⁷ = 7678428419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7678428491 and 7678428500.

It is not a weakly prime, because it can be changed into another prime (7678428647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3839214273 + 3839214274.

It is an arithmetic number, because the mean of its divisors is an integer number (3839214274).

Almost surely, 2^7678428547 is an apocalyptic number.

7678428547 is a deficient number, since it is larger than the sum of its proper divisors (1).

7678428547 is an equidigital number, since it uses as much as digits as its factorization.

7678428547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21073920, while the sum is 58.

The square root of 7678428547 is about 87626.6429061390. The cubic root of 7678428547 is about 1972.8350830503.

The spelling of 7678428547 in words is "seven billion, six hundred seventy-eight million, four hundred twenty-eight thousand, five hundred forty-seven".