63678079 has 2 divisors, whose sum is σ = 63678080. Its totient is φ = 63678078.

The previous prime is 63678077. The next prime is 63678103. The reversal of 63678079 is 97087636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63678079 - 2¹ = 63678077 is a prime.

Together with 63678077, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63678071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31839039 + 31839040.

It is an arithmetic number, because the mean of its divisors is an integer number (31839040).

Almost surely, 2^63678079 is an apocalyptic number.

63678079 is a deficient number, since it is larger than the sum of its proper divisors (1).

63678079 is an equidigital number, since it uses as much as digits as its factorization.

63678079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 63678079 is about 7979.8545726097. The cubic root of 63678079 is about 399.3282036057.

The spelling of 63678079 in words is "sixty-three million, six hundred seventy-eight thousand, seventy-nine".