815630 has 8 divisors (see below), whose sum is σ = 1468152. Its totient is φ = 326248.

The previous prime is 815627. The next prime is 815653. The reversal of 815630 is 36518.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 815596 and 815605.

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, 40772 + ... + 40791.

It is an arithmetic number, because the mean of its divisors is an integer number (183519).

2⁸¹⁵⁶³⁰ is an apocalyptic number.

815630 is a deficient number, since it is larger than the sum of its proper divisors (652522).

815630 is a wasteful number, since it uses less digits than its factorization.

815630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81570.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 815630 is about 903.1223615878. The cubic root of 815630 is about 93.4324485623.

The spelling of 815630 in words is "eight hundred fifteen thousand, six hundred thirty".