49668691 has 2 divisors, whose sum is σ = 49668692. Its totient is φ = 49668690.

The previous prime is 49668683. The next prime is 49668721. The reversal of 49668691 is 19686694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49668691 - 2³ = 49668683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49668191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24834345 + 24834346.

It is an arithmetic number, because the mean of its divisors is an integer number (24834346).

Almost surely, 2^49668691 is an apocalyptic number.

49668691 is a deficient number, since it is larger than the sum of its proper divisors (1).

49668691 is an equidigital number, since it uses as much as digits as its factorization.

49668691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 49668691 is about 7047.6017906803. The cubic root of 49668691 is about 367.5876441124.

The spelling of 49668691 in words is "forty-nine million, six hundred sixty-eight thousand, six hundred ninety-one".