730105 has 4 divisors (see below), whose sum is σ = 876132. Its totient is φ = 584080.

The previous prime is 730091. The next prime is 730111. The reversal of 730105 is 501037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 622521 = 328^2 + 789^2 .

It is not a de Polignac number, because 730105 - 2⁷ = 729977 is a prime.

It is a super-2 number, since 2×730105² = 1066106622050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73006 + ... + 73015.

It is an arithmetic number, because the mean of its divisors is an integer number (219033).

2⁷³⁰¹⁰⁵ is an apocalyptic number.

It is an amenable number.

730105 is a deficient number, since it is larger than the sum of its proper divisors (146027).

730105 is a wasteful number, since it uses less digits than its factorization.

730105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146026.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 730105 is about 854.4618189246. The cubic root of 730105 is about 90.0454502946.

The spelling of 730105 in words is "seven hundred thirty thousand, one hundred five".