73734643 has 2 divisors, whose sum is σ = 73734644. Its totient is φ = 73734642.

The previous prime is 73734641. The next prime is 73734653. The reversal of 73734643 is 34643737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73734643 - 2¹ = 73734641 is a prime.

Together with 73734641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73734641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36867321 + 36867322.

It is an arithmetic number, because the mean of its divisors is an integer number (36867322).

Almost surely, 2^73734643 is an apocalyptic number.

73734643 is a deficient number, since it is larger than the sum of its proper divisors (1).

73734643 is an equidigital number, since it uses as much as digits as its factorization.

73734643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 37.

The square root of 73734643 is about 8586.8878530001. The cubic root of 73734643 is about 419.3312164344.

The spelling of 73734643 in words is "seventy-three million, seven hundred thirty-four thousand, six hundred forty-three".