70069891 has 8 divisors (see below), whose sum is σ = 76965120. Its totient is φ = 63495432.

The previous prime is 70069877. The next prime is 70069921. The reversal of 70069891 is 19896007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70069891 - 2⁵ = 70069859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70069841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79735 + ... + 80608.

It is an arithmetic number, because the mean of its divisors is an integer number (9620640).

Almost surely, 2^70069891 is an apocalyptic number.

70069891 is a deficient number, since it is larger than the sum of its proper divisors (6895229).

70069891 is a wasteful number, since it uses less digits than its factorization.

70069891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160385.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 70069891 is about 8370.7760094271. The cubic root of 70069891 is about 412.2656466189.

The spelling of 70069891 in words is "seventy million, sixty-nine thousand, eight hundred ninety-one".