70684307 has 4 divisors (see below), whose sum is σ = 71345016. Its totient is φ = 70023600.

The previous prime is 70684291. The next prime is 70684331. The reversal of 70684307 is 70348607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70348607 = 7 ⋅10049801.

It is a cyclic number.

It is not a de Polignac number, because 70684307 - 2⁴ = 70684291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70684337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330194 + ... + 330407.

It is an arithmetic number, because the mean of its divisors is an integer number (17836254).

Almost surely, 2^70684307 is an apocalyptic number.

70684307 is a deficient number, since it is larger than the sum of its proper divisors (660709).

70684307 is a wasteful number, since it uses less digits than its factorization.

70684307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660708.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 70684307 is about 8407.3959702157. The cubic root of 70684307 is about 413.4671413956.

The spelling of 70684307 in words is "seventy million, six hundred eighty-four thousand, three hundred seven".