723461 has 4 divisors (see below), whose sum is σ = 743052. Its totient is φ = 703872.

The previous prime is 723451. The next prime is 723467. The reversal of 723461 is 164327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164327 = 101 ⋅1627.

It can be written as a sum of positive squares in 2 ways, for example, as 630436 + 93025 = 794^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 723461 - 2¹⁸ = 461317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9740 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (185763).

2⁷²³⁴⁶¹ is an apocalyptic number.

It is an amenable number.

723461 is a deficient number, since it is larger than the sum of its proper divisors (19591).

723461 is a wasteful number, since it uses less digits than its factorization.

723461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19590.

The product of its digits is 1008, while the sum is 23.

The square root of 723461 is about 850.5651062676. The cubic root of 723461 is about 89.7714778557.

Adding to 723461 its reverse (164327), we get a palindrome (887788).

The spelling of 723461 in words is "seven hundred twenty-three thousand, four hundred sixty-one".