815461 has 8 divisors (see below), whose sum is σ = 866880. Its totient is φ = 764928.

The previous prime is 815459. The next prime is 815471. The reversal of 815461 is 164518.

815461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 815461 - 2¹ = 815459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815401) 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, 3045 + ... + 3301.

It is an arithmetic number, because the mean of its divisors is an integer number (108360).

2⁸¹⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

815461 is a deficient number, since it is larger than the sum of its proper divisors (51419).

815461 is a wasteful number, since it uses less digits than its factorization.

815461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its digits is 960, while the sum is 25.

The square root of 815461 is about 903.0287924535. The cubic root of 815461 is about 93.4259949929.

Adding to 815461 its reverse (164518), we get a palindrome (979979).

The spelling of 815461 in words is "eight hundred fifteen thousand, four hundred sixty-one".