63742879 has 2 divisors, whose sum is σ = 63742880. Its totient is φ = 63742878.

The previous prime is 63742849. The next prime is 63742907. The reversal of 63742879 is 97824736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63742879 - 2⁷ = 63742751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63742829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31871439 + 31871440.

It is an arithmetic number, because the mean of its divisors is an integer number (31871440).

Almost surely, 2^63742879 is an apocalyptic number.

63742879 is a deficient number, since it is larger than the sum of its proper divisors (1).

63742879 is an equidigital number, since it uses as much as digits as its factorization.

63742879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 63742879 is about 7983.9137645643. The cubic root of 63742879 is about 399.4636122921.

The spelling of 63742879 in words is "sixty-three million, seven hundred forty-two thousand, eight hundred seventy-nine".