740990689 has 2 divisors, whose sum is σ = 740990690. Its totient is φ = 740990688.

The previous prime is 740990681. The next prime is 740990711. The reversal of 740990689 is 986099047.

740990689 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 can be written as a sum of positive squares in only one way, i.e., 707985664 + 33005025 = 26608^2 + 5745^2 .

It is a cyclic number.

It is not a de Polignac number, because 740990689 - 2³ = 740990681 is a prime.

It is not a weakly prime, because it can be changed into another prime (740990681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370495344 + 370495345.

It is an arithmetic number, because the mean of its divisors is an integer number (370495345).

Almost surely, 2^740990689 is an apocalyptic number.

It is an amenable number.

740990689 is a deficient number, since it is larger than the sum of its proper divisors (1).

740990689 is an equidigital number, since it uses as much as digits as its factorization.

740990689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 740990689 is about 27221.1441530293. The cubic root of 740990689 is about 904.9076303475.

The spelling of 740990689 in words is "seven hundred forty million, nine hundred ninety thousand, six hundred eighty-nine".