740638733 has 2 divisors, whose sum is σ = 740638734. Its totient is φ = 740638732.

The previous prime is 740638729. The next prime is 740638739. The reversal of 740638733 is 337836047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518837284 + 221801449 = 22778^2 + 14893^2 .

It is a cyclic number.

It is not a de Polignac number, because 740638733 - 2² = 740638729 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740638739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370319366 + 370319367.

It is an arithmetic number, because the mean of its divisors is an integer number (370319367).

Almost surely, 2^740638733 is an apocalyptic number.

It is an amenable number.

740638733 is a deficient number, since it is larger than the sum of its proper divisors (1).

740638733 is an equidigital number, since it uses as much as digits as its factorization.

740638733 is an evil number, because the sum of its binary digits is even.

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

The square root of 740638733 is about 27214.6786312093. The cubic root of 740638733 is about 904.7643365503.

The spelling of 740638733 in words is "seven hundred forty million, six hundred thirty-eight thousand, seven hundred thirty-three".