70016305 has 4 divisors (see below), whose sum is σ = 84019572. Its totient is φ = 56013040.

The previous prime is 70016299. The next prime is 70016329. The reversal of 70016305 is 50361007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50361007 = 23 ⋅2189609.

It can be written as a sum of positive squares in 2 ways, for example, as 43678881 + 26337424 = 6609^2 + 5132^2 .

It is not a de Polignac number, because 70016305 - 2⁹ = 70015793 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7001626 + ... + 7001635.

It is an arithmetic number, because the mean of its divisors is an integer number (21004893).

Almost surely, 2^70016305 is an apocalyptic number.

It is an amenable number.

70016305 is a deficient number, since it is larger than the sum of its proper divisors (14003267).

70016305 is a wasteful number, since it uses less digits than its factorization.

70016305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14003266.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 70016305 is about 8367.5746187291. The cubic root of 70016305 is about 412.1605263333.

The spelling of 70016305 in words is "seventy million, sixteen thousand, three hundred five".