734851561 has 8 divisors (see below), whose sum is σ = 780738120. Its totient is φ = 690334848.

The previous prime is 734851529. The next prime is 734851573. The reversal of 734851561 is 165158437.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 450288400 + 284563161 = 21220^2 + 16869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 734851561 - 2⁵ = 734851529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (734852561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341356 + ... + 343501.

It is an arithmetic number, because the mean of its divisors is an integer number (97592265).

Almost surely, 2^734851561 is an apocalyptic number.

It is an amenable number.

734851561 is a deficient number, since it is larger than the sum of its proper divisors (45886559).

734851561 is a wasteful number, since it uses less digits than its factorization.

734851561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684923.

The product of its digits is 100800, while the sum is 40.

The square root of 734851561 is about 27108.1456577170. The cubic root of 734851561 is about 902.4016353688.

The spelling of 734851561 in words is "seven hundred thirty-four million, eight hundred fifty-one thousand, five hundred sixty-one".