70349579 has 4 divisors (see below), whose sum is σ = 71240160. Its totient is φ = 69459000.

The previous prime is 70349561. The next prime is 70349599. The reversal of 70349579 is 97594307.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97594307 = 8053 ⋅12119.

It is a cyclic number.

It is not a de Polignac number, because 70349579 - 2²⁰ = 69301003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70349549) 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, 445172 + ... + 445329.

It is an arithmetic number, because the mean of its divisors is an integer number (17810040).

Almost surely, 2^70349579 is an apocalyptic number.

70349579 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

70349579 is a deficient number, since it is larger than the sum of its proper divisors (890581).

70349579 is an equidigital number, since it uses as much as digits as its factorization.

70349579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890580.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 70349579 is about 8387.4655886030. The cubic root of 70349579 is about 412.8134457535.

The spelling of 70349579 in words is "seventy million, three hundred forty-nine thousand, five hundred seventy-nine".