734158661 has 2 divisors, whose sum is σ = 734158662. Its totient is φ = 734158660.

The previous prime is 734158639. The next prime is 734158697. The reversal of 734158661 is 166851437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515562436 + 218596225 = 22706^2 + 14785^2 .

It is a cyclic number.

It is not a de Polignac number, because 734158661 - 2¹⁰ = 734157637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (734158631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367079330 + 367079331.

It is an arithmetic number, because the mean of its divisors is an integer number (367079331).

Almost surely, 2^734158661 is an apocalyptic number.

It is an amenable number.

734158661 is a deficient number, since it is larger than the sum of its proper divisors (1).

734158661 is an equidigital number, since it uses as much as digits as its factorization.

734158661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 734158661 is about 27095.3623522550. The cubic root of 734158661 is about 902.1179178783.

The spelling of 734158661 in words is "seven hundred thirty-four million, one hundred fifty-eight thousand, six hundred sixty-one".