723061 has 4 divisors (see below), whose sum is σ = 765612. Its totient is φ = 680512.

The previous prime is 723053. The next prime is 723067. The reversal of 723061 is 160327.

723061 = 129² + 130² + ... + 162².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160327 = 17 ⋅9431.

It can be written as a sum of positive squares in 2 ways, for example, as 398161 + 324900 = 631^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 723061 - 2³ = 723053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21250 + ... + 21283.

It is an arithmetic number, because the mean of its divisors is an integer number (191403).

2⁷²³⁰⁶¹ is an apocalyptic number.

It is an amenable number.

723061 is a deficient number, since it is larger than the sum of its proper divisors (42551).

723061 is a wasteful number, since it uses less digits than its factorization.

723061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42550.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 723061 is about 850.3299359660. The cubic root of 723061 is about 89.7549299879.

Adding to 723061 its reverse (160327), we get a palindrome (883388).

The spelling of 723061 in words is "seven hundred twenty-three thousand, sixty-one".