70566513 has 16 divisors (see below), whose sum is σ = 100300800. Its totient is φ = 44001360.

The previous prime is 70566497. The next prime is 70566521. The reversal of 70566513 is 31566507.

It is not a de Polignac number, because 70566513 - 2⁴ = 70566497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70566583) 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 15 ways as a sum of consecutive naturals, for example, 3333 + ... + 12338.

It is an arithmetic number, because the mean of its divisors is an integer number (6268800).

Almost surely, 2^70566513 is an apocalyptic number.

It is an amenable number.

70566513 is a deficient number, since it is larger than the sum of its proper divisors (29734287).

70566513 is a wasteful number, since it uses less digits than its factorization.

70566513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15772.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 70566513 is about 8400.3876696257. The cubic root of 70566513 is about 413.2373354207.

The spelling of 70566513 in words is "seventy million, five hundred sixty-six thousand, five hundred thirteen".