70086091 has 4 divisors (see below), whose sum is σ = 70131312. Its totient is φ = 70040872.

The previous prime is 70086061. The next prime is 70086101. The reversal of 70086091 is 19068007.

70086091 = T₆₈₃₄ + T₆₈₃₅ + T₆₈₃₆.

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 70086091 - 2⁹ = 70085579 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70086031) 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, 20200 + ... + 23413.

It is an arithmetic number, because the mean of its divisors is an integer number (17532828).

Almost surely, 2^70086091 is an apocalyptic number.

70086091 is the 6836-th centered triangular number.

70086091 is a deficient number, since it is larger than the sum of its proper divisors (45221).

70086091 is a wasteful number, since it uses less digits than its factorization.

70086091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45220.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 70086091 is about 8371.7436057252. The cubic root of 70086091 is about 412.2974157985.

The spelling of 70086091 in words is "seventy million, eighty-six thousand, ninety-one".