70803979 has 4 divisors (see below), whose sum is σ = 70994176. Its totient is φ = 70613784.

The previous prime is 70803917. The next prime is 70803983. The reversal of 70803979 is 97930807.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70803979 - 2¹⁷ = 70672907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70806979) 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, 94539 + ... + 95284.

It is an arithmetic number, because the mean of its divisors is an integer number (17748544).

Almost surely, 2^70803979 is an apocalyptic number.

70803979 is a deficient number, since it is larger than the sum of its proper divisors (190197).

70803979 is a wasteful number, since it uses less digits than its factorization.

70803979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190196.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 70803979 is about 8414.5100273278. The cubic root of 70803979 is about 413.7003498866.

The spelling of 70803979 in words is "seventy million, eight hundred three thousand, nine hundred seventy-nine".