740906657 has 2 divisors, whose sum is σ = 740906658. Its totient is φ = 740906656.

The previous prime is 740906633. The next prime is 740906687. The reversal of 740906657 is 756609047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725548096 + 15358561 = 26936^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 740906657 - 2⁸ = 740906401 is a prime.

It is not a weakly prime, because it can be changed into another prime (740906687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370453328 + 370453329.

It is an arithmetic number, because the mean of its divisors is an integer number (370453329).

Almost surely, 2^740906657 is an apocalyptic number.

It is an amenable number.

740906657 is a deficient number, since it is larger than the sum of its proper divisors (1).

740906657 is an equidigital number, since it uses as much as digits as its factorization.

740906657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 740906657 is about 27219.6006032418. The cubic root of 740906657 is about 904.8734220577.

The spelling of 740906657 in words is "seven hundred forty million, nine hundred six thousand, six hundred fifty-seven".