743716643 has 2 divisors, whose sum is σ = 743716644. Its totient is φ = 743716642.

The previous prime is 743716609. The next prime is 743716679. The reversal of 743716643 is 346617347.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 743716643 - 2⁸ = 743716387 is a prime.

It is a super-3 number, since 3×743716643³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 743716643.

It is not a weakly prime, because it can be changed into another prime (743716543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371858321 + 371858322.

It is an arithmetic number, because the mean of its divisors is an integer number (371858322).

Almost surely, 2^743716643 is an apocalyptic number.

743716643 is a deficient number, since it is larger than the sum of its proper divisors (1).

743716643 is an equidigital number, since it uses as much as digits as its factorization.

743716643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 41.

The square root of 743716643 is about 27271.1687134967. The cubic root of 743716643 is about 906.0159294144.

The spelling of 743716643 in words is "seven hundred forty-three million, seven hundred sixteen thousand, six hundred forty-three".