70660565 has 8 divisors (see below), whose sum is σ = 87084600. Its totient is φ = 55000512.

The previous prime is 70660561. The next prime is 70660591. The reversal of 70660565 is 56506607.

It can be written as a sum of positive squares in 4 ways, for example, as 45670564 + 24990001 = 6758^2 + 4999^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70660565 - 2² = 70660561 is a prime.

It is a super-2 number, since 2×70660565² = 9985830892238450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70660561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190790 + ... + 191159.

It is an arithmetic number, because the mean of its divisors is an integer number (10885575).

Almost surely, 2^70660565 is an apocalyptic number.

It is an amenable number.

70660565 is a deficient number, since it is larger than the sum of its proper divisors (16424035).

70660565 is a wasteful number, since it uses less digits than its factorization.

70660565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381991.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 70660565 is about 8405.9838805460. The cubic root of 70660565 is about 413.4208433484.

The spelling of 70660565 in words is "seventy million, six hundred sixty thousand, five hundred sixty-five".