70886091 has 4 divisors (see below), whose sum is σ = 94514792. Its totient is φ = 47257392.

The previous prime is 70886077. The next prime is 70886099. The reversal of 70886091 is 19068807.

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

It is not a de Polignac number, because 70886091 - 2⁶ = 70886027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70886099) 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, 11814346 + ... + 11814351.

It is an arithmetic number, because the mean of its divisors is an integer number (23628698).

Almost surely, 2^70886091 is an apocalyptic number.

70886091 is a deficient number, since it is larger than the sum of its proper divisors (23628701).

70886091 is a wasteful number, since it uses less digits than its factorization.

70886091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23628700.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 70886091 is about 8419.3878043478. The cubic root of 70886091 is about 413.8602120882.

The spelling of 70886091 in words is "seventy million, eight hundred eighty-six thousand, ninety-one".