70871279 has 4 divisors (see below), whose sum is σ = 70899480. Its totient is φ = 70843080.

The previous prime is 70871261. The next prime is 70871287. The reversal of 70871279 is 97217807.

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 70871279 - 2⁸ = 70871023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70871219) 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, 9917 + ... + 15494.

It is an arithmetic number, because the mean of its divisors is an integer number (17724870).

Almost surely, 2^70871279 is an apocalyptic number.

70871279 is a deficient number, since it is larger than the sum of its proper divisors (28201).

70871279 is a wasteful number, since it uses less digits than its factorization.

70871279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28200.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 70871279 is about 8418.5081219893. The cubic root of 70871279 is about 413.8313840328.

The spelling of 70871279 in words is "seventy million, eight hundred seventy-one thousand, two hundred seventy-nine".