678050801 has 2 divisors, whose sum is σ = 678050802. Its totient is φ = 678050800.

The previous prime is 678050773. The next prime is 678050809. The reversal of 678050801 is 108050876.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519794401 + 158256400 = 22799^2 + 12580^2 .

It is a cyclic number.

It is not a de Polignac number, because 678050801 - 2²² = 673856497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (678050809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339025400 + 339025401.

It is an arithmetic number, because the mean of its divisors is an integer number (339025401).

Almost surely, 2^678050801 is an apocalyptic number.

It is an amenable number.

678050801 is a deficient number, since it is larger than the sum of its proper divisors (1).

678050801 is an equidigital number, since it uses as much as digits as its factorization.

678050801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 678050801 is about 26039.4086146364. The cubic root of 678050801 is about 878.5249052262.

The spelling of 678050801 in words is "six hundred seventy-eight million, fifty thousand, eight hundred one".