70306985 has 16 divisors (see below), whose sum is σ = 102093696. Its totient is φ = 45374208.

The previous prime is 70306981. The next prime is 70306987. The reversal of 70306985 is 58960307.

It is a cyclic number.

It is not a de Polignac number, because 70306985 - 2² = 70306981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70306981) 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, 58487 + ... + 59676.

It is an arithmetic number, because the mean of its divisors is an integer number (6380856).

Almost surely, 2^70306985 is an apocalyptic number.

It is an amenable number.

70306985 is a deficient number, since it is larger than the sum of its proper divisors (31786711).

70306985 is a wasteful number, since it uses less digits than its factorization.

70306985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118192.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 70306985 is about 8384.9260581117. The cubic root of 70306985 is about 412.7301146423.

The spelling of 70306985 in words is "seventy million, three hundred six thousand, nine hundred eighty-five".