96661391 has 2 divisors, whose sum is σ = 96661392. Its totient is φ = 96661390.

The previous prime is 96661381. The next prime is 96661403. The reversal of 96661391 is 19316669.

It is a weak prime.

It is an emirp because it is prime and its reverse (19316669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 96661391 - 2²² = 92467087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96661381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48330695 + 48330696.

It is an arithmetic number, because the mean of its divisors is an integer number (48330696).

Almost surely, 2^96661391 is an apocalyptic number.

96661391 is a deficient number, since it is larger than the sum of its proper divisors (1).

96661391 is an equidigital number, since it uses as much as digits as its factorization.

96661391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 96661391 is about 9831.6525060643. The cubic root of 96661391 is about 458.9348242935.

The spelling of 96661391 in words is "ninety-six million, six hundred sixty-one thousand, three hundred ninety-one".