70879811 has 4 divisors (see below), whose sum is σ = 71073312. Its totient is φ = 70686312.

The previous prime is 70879801. The next prime is 70879849. The reversal of 70879811 is 11897807.

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 70879811 - 2²⁶ = 3770947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70879801) 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 3 ways as a sum of consecutive naturals, for example, 96200 + ... + 96933.

It is an arithmetic number, because the mean of its divisors is an integer number (17768328).

Almost surely, 2^70879811 is an apocalyptic number.

70879811 is a deficient number, since it is larger than the sum of its proper divisors (193501).

70879811 is a wasteful number, since it uses less digits than its factorization.

70879811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193500.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 70879811 is about 8419.0148473560. The cubic root of 70879811 is about 413.8479900437.

The spelling of 70879811 in words is "seventy million, eight hundred seventy-nine thousand, eight hundred eleven".