70116709 has 4 divisors (see below), whose sum is σ = 75510316. Its totient is φ = 64723104.

The previous prime is 70116679. The next prime is 70116749. The reversal of 70116709 is 90761107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90761107 = 61 ⋅1487887.

It can be written as a sum of positive squares in 2 ways, for example, as 21883684 + 48233025 = 4678^2 + 6945^2 .

It is a cyclic number.

It is not a de Polignac number, because 70116709 - 2⁵ = 70116677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70116749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696784 + ... + 2696809.

It is an arithmetic number, because the mean of its divisors is an integer number (18877579).

Almost surely, 2^70116709 is an apocalyptic number.

It is an amenable number.

70116709 is a deficient number, since it is larger than the sum of its proper divisors (5393607).

70116709 is a wasteful number, since it uses less digits than its factorization.

70116709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5393606.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 70116709 is about 8373.5720573719. The cubic root of 70116709 is about 412.3574461805.

The spelling of 70116709 in words is "seventy million, one hundred sixteen thousand, seven hundred nine".