70879727 has 2 divisors, whose sum is σ = 70879728. Its totient is φ = 70879726.

The previous prime is 70879723. The next prime is 70879729. The reversal of 70879727 is 72797807.

It is a strong prime.

It is an emirp because it is prime and its reverse (72797807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70879727 - 2² = 70879723 is a prime.

Together with 70879729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70879723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35439863 + 35439864.

It is an arithmetic number, because the mean of its divisors is an integer number (35439864).

Almost surely, 2^70879727 is an apocalyptic number.

70879727 is a deficient number, since it is larger than the sum of its proper divisors (1).

70879727 is an equidigital number, since it uses as much as digits as its factorization.

70879727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 47.

The square root of 70879727 is about 8419.0098586473. The cubic root of 70879727 is about 413.8478265592.

The spelling of 70879727 in words is "seventy million, eight hundred seventy-nine thousand, seven hundred twenty-seven".