70406665 has 16 divisors (see below), whose sum is σ = 96808320. Its totient is φ = 48153600.

The previous prime is 70406663. The next prime is 70406669. The reversal of 70406665 is 56660407.

It is not a de Polignac number, because 70406665 - 2¹ = 70406663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70406665.

It is not an unprimeable number, because it can be changed into a prime (70406663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12265 + ... + 17065.

It is an arithmetic number, because the mean of its divisors is an integer number (6050520).

Almost surely, 2^70406665 is an apocalyptic number.

It is an amenable number.

70406665 is a deficient number, since it is larger than the sum of its proper divisors (26401655).

70406665 is a wasteful number, since it uses less digits than its factorization.

70406665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 70406665 is about 8390.8679527210. The cubic root of 70406665 is about 412.9250763527.

The spelling of 70406665 in words is "seventy million, four hundred six thousand, six hundred sixty-five".