99645743 has 2 divisors, whose sum is σ = 99645744. Its totient is φ = 99645742.

The previous prime is 99645739. The next prime is 99645761. The reversal of 99645743 is 34754699.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99645743 - 2² = 99645739 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99645043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49822871 + 49822872.

It is an arithmetic number, because the mean of its divisors is an integer number (49822872).

Almost surely, 2^99645743 is an apocalyptic number.

99645743 is a deficient number, since it is larger than the sum of its proper divisors (1).

99645743 is an equidigital number, since it uses as much as digits as its factorization.

99645743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 99645743 is about 9982.2714348990. The cubic root of 99645743 is about 463.6101297391.

The spelling of 99645743 in words is "ninety-nine million, six hundred forty-five thousand, seven hundred forty-three".