50660639 has 2 divisors, whose sum is σ = 50660640. Its totient is φ = 50660638.

The previous prime is 50660581. The next prime is 50660641. The reversal of 50660639 is 93606605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50660639 - 2⁸ = 50660383 is a prime.

Together with 50660641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50660599 and 50660608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50660699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25330319 + 25330320.

It is an arithmetic number, because the mean of its divisors is an integer number (25330320).

Almost surely, 2^50660639 is an apocalyptic number.

50660639 is a deficient number, since it is larger than the sum of its proper divisors (1).

50660639 is an equidigital number, since it uses as much as digits as its factorization.

50660639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 50660639 is about 7117.6287483965. The cubic root of 50660639 is about 370.0185990164.

The spelling of 50660639 in words is "fifty million, six hundred sixty thousand, six hundred thirty-nine".