70319785 has 4 divisors (see below), whose sum is σ = 84383748. Its totient is φ = 56255824.

The previous prime is 70319731. The next prime is 70319791. The reversal of 70319785 is 58791307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58791307 = 83 ⋅708329.

It can be written as a sum of positive squares in 2 ways, for example, as 28601104 + 41718681 = 5348^2 + 6459^2 .

It is a cyclic number.

It is not a de Polignac number, because 70319785 - 2⁷ = 70319657 is a prime.

It is a Smith number, since the sum of its digits (40) 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, 7031974 + ... + 7031983.

It is an arithmetic number, because the mean of its divisors is an integer number (21095937).

Almost surely, 2^70319785 is an apocalyptic number.

It is an amenable number.

70319785 is a deficient number, since it is larger than the sum of its proper divisors (14063963).

70319785 is a wasteful number, since it uses less digits than its factorization.

70319785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14063962.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 70319785 is about 8385.6892978455. The cubic root of 70319785 is about 412.7551601618.

The spelling of 70319785 in words is "seventy million, three hundred nineteen thousand, seven hundred eighty-five".