70979689 has 6 divisors (see below), whose sum is σ = 78019130. Its totient is φ = 64526880.

The previous prime is 70979681. The next prime is 70979717. The reversal of 70979689 is 98697907.

It can be written as a sum of positive squares in only one way, i.e., 68608089 + 2371600 = 8283^2 + 1540^2 .

It is not a de Polignac number, because 70979689 - 2³ = 70979681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70979681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293184 + ... + 293425.

Almost surely, 2^70979689 is an apocalyptic number.

It is an amenable number.

70979689 is a deficient number, since it is larger than the sum of its proper divisors (7039441).

70979689 is a wasteful number, since it uses less digits than its factorization.

70979689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586631 (or 586620 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 70979689 is about 8424.9444508554. The cubic root of 70979689 is about 414.0422856604.

The spelling of 70979689 in words is "seventy million, nine hundred seventy-nine thousand, six hundred eighty-nine".