740721503 has 2 divisors, whose sum is σ = 740721504. Its totient is φ = 740721502.

The previous prime is 740721491. The next prime is 740721523. The reversal of 740721503 is 305127047.

740721503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (305127047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740721503 is a 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 (740721523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370360751 + 370360752.

It is an arithmetic number, because the mean of its divisors is an integer number (370360752).

Almost surely, 2^740721503 is an apocalyptic number.

740721503 is a deficient number, since it is larger than the sum of its proper divisors (1).

740721503 is an equidigital number, since it uses as much as digits as its factorization.

740721503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 740721503 is about 27216.1992754315. The cubic root of 740721503 is about 904.7980392411.

The spelling of 740721503 in words is "seven hundred forty million, seven hundred twenty-one thousand, five hundred three".