70879643 has 4 divisors (see below), whose sum is σ = 71304240. Its totient is φ = 70455048.

The previous prime is 70879637. The next prime is 70879649. The reversal of 70879643 is 34697807.

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

It is an interprime number because it is at equal distance from previous prime (70879637) and next prime (70879649).

It is a cyclic number.

It is not a de Polignac number, because 70879643 - 2⁸ = 70879387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70879594 and 70879603.

It is not an unprimeable number, because it can be changed into a prime (70879649) 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, 212048 + ... + 212381.

It is an arithmetic number, because the mean of its divisors is an integer number (17826060).

Almost surely, 2^70879643 is an apocalyptic number.

70879643 is a deficient number, since it is larger than the sum of its proper divisors (424597).

70879643 is a wasteful number, since it uses less digits than its factorization.

70879643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424596.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 70879643 is about 8419.0048699356. The cubic root of 70879643 is about 413.8476630746.

The spelling of 70879643 in words is "seventy million, eight hundred seventy-nine thousand, six hundred forty-three".