806670513 has 72 divisors (see below), whose sum is σ = 1353372384. Its totient is φ = 459043200.

The previous prime is 806670509. The next prime is 806670533. The reversal of 806670513 is 315076608.

806670513 is a `hidden beast` number, since 80 + 6 + 67 + 0 + 513 = 666.

It is not a de Polignac number, because 806670513 - 2² = 806670509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (806670503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3822978 + ... + 3823188.

Almost surely, 2^806670513 is an apocalyptic number.

It is an amenable number.

806670513 is a deficient number, since it is larger than the sum of its proper divisors (546701871).

806670513 is a wasteful number, since it uses less digits than its factorization.

806670513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 806670513 is about 28401.9455847658. The cubic root of 806670513 is about 930.8907767661.

The spelling of 806670513 in words is "eight hundred six million, six hundred seventy thousand, five hundred thirteen".