70327309 has 4 divisors (see below), whose sum is σ = 75737116. Its totient is φ = 64917504.

The previous prime is 70327297. The next prime is 70327321. The reversal of 70327309 is 90372307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90372307 = 107 ⋅844601.

It is an interprime number because it is at equal distance from previous prime (70327297) and next prime (70327321).

It can be written as a sum of positive squares in 2 ways, for example, as 6487209 + 63840100 = 2547^2 + 7990^2 .

It is a cyclic number.

It is not a de Polignac number, because 70327309 - 2⁵ = 70327277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70327409) 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, 2704884 + ... + 2704909.

It is an arithmetic number, because the mean of its divisors is an integer number (18934279).

Almost surely, 2^70327309 is an apocalyptic number.

It is an amenable number.

70327309 is a deficient number, since it is larger than the sum of its proper divisors (5409807).

70327309 is a wasteful number, since it uses less digits than its factorization.

70327309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409806.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 70327309 is about 8386.1379072849. The cubic root of 70327309 is about 412.7698808129.

It can be divided in two parts, 7032 and 7309, that added together give a palindrome (14341).

The spelling of 70327309 in words is "seventy million, three hundred twenty-seven thousand, three hundred nine".