815130647 has 8 divisors (see below), whose sum is σ = 885711360. Its totient is φ = 747317880.

The previous prime is 815130593. The next prime is 815130697. The reversal of 815130647 is 746031518.

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

It is not a de Polignac number, because 815130647 - 2⁶ = 815130583 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 (815130697) 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, 691373 + ... + 692550.

It is an arithmetic number, because the mean of its divisors is an integer number (110713920).

Almost surely, 2^815130647 is an apocalyptic number.

815130647 is a deficient number, since it is larger than the sum of its proper divisors (70580713).

815130647 is a wasteful number, since it uses less digits than its factorization.

815130647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383973.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 815130647 is about 28550.4929379512. The cubic root of 815130647 is about 934.1337729303.

The spelling of 815130647 in words is "eight hundred fifteen million, one hundred thirty thousand, six hundred forty-seven".