6815730 has 16 divisors (see below), whose sum is σ = 16357824. Its totient is φ = 1817520.

The previous prime is 6815729. The next prime is 6815741. The reversal of 6815730 is 375186.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 227191 = 6815730 / (6 + 8 + 1 + 5 + 7 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113566 + ... + 113625.

It is an arithmetic number, because the mean of its divisors is an integer number (1022364).

Almost surely, 2^6815730 is an apocalyptic number.

6815730 is an abundant number, since it is smaller than the sum of its proper divisors (9542094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6815730 is a wasteful number, since it uses less digits than its factorization.

6815730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227201.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6815730 is about 2610.6953096828. The cubic root of 6815730 is about 189.5996185611.

The spelling of 6815730 in words is "six million, eight hundred fifteen thousand, seven hundred thirty".