734155661 has 2 divisors, whose sum is σ = 734155662. Its totient is φ = 734155660.

The previous prime is 734155627. The next prime is 734155663. The reversal of 734155661 is 166551437.

734155661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712356100 + 21799561 = 26690^2 + 4669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-734155661 is a prime.

It is a Sophie Germain prime.

Together with 734155663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (734155663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367077830 + 367077831.

It is an arithmetic number, because the mean of its divisors is an integer number (367077831).

Almost surely, 2^734155661 is an apocalyptic number.

It is an amenable number.

734155661 is a deficient number, since it is larger than the sum of its proper divisors (1).

734155661 is an equidigital number, since it uses as much as digits as its factorization.

734155661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 734155661 is about 27095.3069921712. The cubic root of 734155661 is about 902.1166890988.

The spelling of 734155661 in words is "seven hundred thirty-four million, one hundred fifty-five thousand, six hundred sixty-one".